A BIM and prefabricated integrated construction method for masonry pipe wrapping

Abstract

The application relates to the technical field of building construction, and particularly discloses a BIM and prefabricated pipe-wrapping integrated construction method, which mainly comprises the following steps: establishing a BIM comprehensive model and determining a pipe-wrapping outer contour control surface; re-measuring the installed pipelines and obtaining pipeline deviation amounts; under the condition of preferentially maintaining the stability of the pipe-wrapping outer contour control surface, recursively distributing the pipeline deviation amounts; generating skin-level prefabricated block data according to the recursive distribution results; processing and numbering the prefabricated pipe-wrapping blocks, and carrying out on-site skin-misaligned masonry. The application can implement pipeline deviation into mortar joint compensation, pipeline yielding slot deviation, internal yielding cavity adjustment and multi-skin gradual transition, reduce the problems of on-site temporary brick cutting, pipe-wrapping outer side surface mutation and discontinuous waterproof finish edge closing, and improve the pipe-wrapping construction quality of the masonry.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to an integrated construction method based on BIM and prefabricated masonry pipe wrapping. Background Technology

[0002] Masonry pipe enclosure construction is a common part of secondary structure construction in buildings, as well as the sealing of pipes in kitchens, bathrooms, pipe shafts, and corners. It is mainly used to enclose water supply pipes, drainage pipes, electrical conduits, junction boxes, and local equipment pipelines, and to provide a base layer for subsequent plastering, waterproofing, wall tile laying, and floor tile finishing. With the application of BIM detailed design and prefabrication technology in building construction, existing projects can improve the standardization of masonry construction by integrating electromechanical pipelines, refining brick layout, centrally cutting blocks, prefabricating open blocks, and installing them with on-site numbering, thereby reducing on-site grooving, brick cutting, and rework.

[0003] However, in actual construction, the actual location of pipelines after installation is often affected by factors such as structural deviations, pipeline fixing errors, on-site clearance space, and parallel arrangement of multiple pipelines, resulting in discrepancies with the detailed design location. While existing technologies can address general pipeline pre-installation and construction issues through BIM-based bricklaying, precast slotted blocks, U-shaped brickwork, or mortar filling, the correlation control between pipeline deviations and the finished surface of the pipe casing, waterproofing line bends, wall tile edging, and floor tile root edging is still insufficiently refined. For example, patent CN112411864A discloses a slotless masonry construction method based on BIM technology and precast blocks, along with slotted blocks. This method merges the electromechanical model with the structural model and adjusts the wall block arrangement using a slotted block model to achieve staggered joint construction between slotted blocks and wall blocks. This solution focuses on using BIM and slotted blocks to improve the accuracy and efficiency of slotless masonry, but it doesn't address how to maintain the relative stability of the pipe casing's outer contour after on-site pipeline installation deviations occur. Under the premise of absorbing deviations step by step, no further refinement was made; for example, the published patent CN104806025A discloses a complete construction process for direct burial of electromechanical pipelines and junction boxes in masonry engineering. It pre-sets the electromechanical pipelines and junction boxes in place, and during masonry, it fits strip bricks or U-shaped bricks on both sides of the reserved space for the electromechanical pipelines and junction boxes, and fills the gaps between the electromechanical pipelines and junction boxes and the bricks with masonry mortar. This solution can reduce secondary trenching and repairs, but its key point is the pre-reservation and pre-embedding of pipelines and junction boxes and the filling. In reality, there is still a lack of more detailed construction organization methods for the linkage control between multiple pipelines running side by side, pipeline misalignment, the outer contour of the pipe enclosure, and subsequent waterproofing and finishing. The aforementioned published literature shows that existing technologies already include BIM-based bricklaying, precast slotted blocks, and pipeline pre-embedded masonry, but there is still room for further refinement on how to absorb pipeline deviations during masonry pipe enclosure construction without easily changing the outer contour control surface of the pipe enclosure, and how to further implement this in the processing and installation of each layer of precast blocks. Summary of the Invention

[0004] The technical problem this invention aims to solve is that although existing masonry pipe wrapping construction involves BIM refinement, precast slotted blocks, or pre-embedded pipeline construction, the methods for absorbing pipeline deviations on-site at each stage while maintaining the stability of the outer contour control surface of the pipe wrapping, and implementing these methods in the processing of each layer of precast blocks and on-site construction, are still not detailed enough. Therefore, we propose an integrated construction method for masonry pipe wrapping based on BIM and precast blocks.

[0005] To achieve the above objectives, this application adopts the following technical solution: a construction method for integrated masonry pipe wrapping based on BIM and prefabricated components, characterized by comprising the following steps: Step S1: Establish a BIM integrated model and determine the outer contour control surface of the pipe enclosure based on the BIM integrated model. The outer contour control surface of the pipe enclosure is used to control the outer finished surface of the pipe enclosure masonry, the waterproof closing position, and the finishing edge position. Step S2: After the water and electricity pipelines are installed, the installed pipelines are re-measured, and the actual measured data of the pipelines on site obtained from the re-measurement are compared with the design data in the BIM integrated model to obtain the pipeline deviation of the corresponding pipe-encasing section or the corresponding number of masonry layers. Step S3: Under the condition of prioritizing the stability of the outer contour control surface of the pipe, the pipeline deviation is recursively allocated. At least one compensation amount is determined to handle the pipeline deviation in the order of mortar joint compensation amount, pipeline clearance groove offset amount, internal clearance cavity adjustment amount, and multi-skin gradual transition amount. Wherein, if there is still a residual deviation that has not been absorbed after the previous compensation amount reaches the corresponding allowable range, the residual deviation is transferred to the next compensation amount. Step S4: Generate precast block data at the skin number level based on the recursive allocation result. The precast block data at the skin number level includes at least one of the following: number of skins, block type, pipeline clearance groove position, mortar joint compensation amount, pipeline clearance groove offset amount, internal clearance cavity adjustment amount, and multi-skin gradual transition amount, as well as installation direction and block number. Step S5: Process and number the precast pipe-encasing blocks according to the precast block data of the number of layers, and lay them on site in staggered layers according to the block number and installation direction, so that the pipeline clearance groove or internal clearance cavity of the precast pipe-encasing block corresponds to the pipeline position on site.

[0006] Preferably, in step S1, when determining the outer contour control surface of the pipe enclosure, candidate outer contours of the pipe enclosure are generated based on the outer envelope of the pipeline and the net distance for pipeline protection, the specifications and processing restrictions of the blocks, the edge finishing requirements of the wall tiles, the finished surface requirements of the floor tiles, and the continuous path of the waterproof line. The outer contour control surface of the pipe enclosure that meets the requirements for pipeline protection, block processing, waterproof closure, and finishing edge is determined from the candidate outer contours of the pipe enclosure.

[0007] Preferably, in step S1, the outer contour control surface of the pipe includes a vertical outer control surface, a root control surface, and a corner control surface; the vertical outer control surface is used to control the flatness of the outer side of the pipe masonry and the wall tile laying surface, the root control surface is used to control the finished surface of the floor tiles and the starting point of the waterproof line, and the corner control surface is used to control the turning point of the waterproof line at the inside or outside corner of the pipe and the edge position of the wall tiles.

[0008] Preferably, in step S2, the measured data of the pipeline on site are mapped according to the pipe-encasing section and the number of masonry courses; for vertical pipelines, the pipeline position data of the pipeline in the corresponding height range of each masonry course or the outer envelope of the pipeline is taken as the pipeline position data of that masonry course; for horizontal or diagonal pipelines, the corresponding section is taken as the range of the number of masonry courses they pass through.

[0009] Preferably, in step S3, the recursive allocation of the pipeline deviation includes: When the pipeline deviation is within the adjustable range of the mortar joint, the pipeline deviation is determined as the mortar joint compensation amount. When the pipeline deviation exceeds the adjustable range of the mortar joint, the mortar joint compensation amount is limited to the allowable adjustment range of the mortar joint, and the part not absorbed by the mortar joint compensation is regarded as the remaining deviation for further judgment. When the remaining deviation can be absorbed by changing the position of the pipeline relief groove, the remaining deviation is determined as the pipeline relief groove offset. When the remaining deviation exceeds the allowable offset range of the pipeline clearance groove, the offset of the pipeline clearance groove is limited to the allowable range, and the part that is not absorbed by the offset of the pipeline clearance groove continues to be transmitted. When the remaining deviation can be absorbed by the internal relief cavity, the remaining deviation is determined as the internal relief cavity adjustment amount; When the remaining deviation exceeds the adjustable range of the internal clearance cavity, the deviation exceeding the internal compensation range is determined as the multi-skin gradual transition amount.

[0010] Preferably, in step S4, for the mortar joint compensation section, the precast block data at the skin level records the mortar joint compensation amount of the corresponding skin block and the staggered relationship of adjacent skin blocks; for the pipeline clearance groove offset section, the precast block data at the skin level records the offset direction and offset amount of the pipeline clearance groove; for the internal clearance cavity adjustment section, the precast block data at the skin level records the formation range of the internal clearance cavity; for the multi-skin gradual transition section, the precast block data at the skin level records the gradual transition amount and the adjustment direction of the outer surface corresponding to each skin block.

[0011] Preferably, in step S5, the precast pipe-encasing block includes at least one of the following: bottom reference block, standard open block, eccentric open block, combined clearance block, waterproof line closing block, wall brick edge reference block, and beam bottom and top brick transition block; the pipeline clearance groove of the eccentric open block is offset relative to the center of the block in the pipeline deviation direction, and the combined clearance block forms an internal clearance cavity through the cooperation of adjacent blocks.

[0012] Preferably, the combined clearance blocks include left and right interlocking opening blocks, double-layer blocks, or upper and lower staggered opening blocks; when the wall thickness is 100mm to 120mm, left and right interlocking opening blocks are used to stagger the opening directions of adjacent upper and lower layers of blocks; when the wall thickness is 200mm or more, double-layer blocks are used to place the pipeline in the internal clearance cavity formed between the blocks on both sides.

[0013] Preferably, in step S5, when performing staggered mortar laying on site, the bottom reference block is first installed, and the positional relationship between the bottom reference block and the outer contour control line of the pipe cover, the reference line of the finished surface of the floor tile, and the upturn control line of the waterproof line is checked. After the check is qualified, the precast pipe cover blocks are installed from bottom to top according to the block number, so that the vertical mortar joints of adjacent layers of blocks are staggered, and the pipeline clearance groove or internal clearance cavity corresponds to the position of the pipeline on site.

[0014] Preferably, after step S5, the waterproofing line finishing and wall and floor tile finishing construction are also included; wherein, the waterproofing layer finishing construction is carried out along the finishing groove or finishing reference surface of the waterproofing line finishing block, so that the waterproofing layer extends from the wall surface to the root of the pipe and continuously turns along the inside or outside corner of the pipe; when laying wall tiles, the starting line and finishing line of the wall tiles are determined based on the outer contour control surface of the pipe and the wall tile finishing reference block; when laying floor tiles, the root edge is finished based on the reference edge of the finished surface of the floor tile corresponding to the bottom reference block.

[0015] The technical effects and advantages of this invention are as follows: In this invention, the outer contour control surface of the pipe enclosure is used as the main control benchmark for masonry pipe enclosure construction. During the BIM refinement stage, the net clearance for pipeline protection, block processing restrictions, waterproof line turning paths, and wall and floor tile edge finishing requirements are uniformly incorporated into the determination process of the outer contour of the pipe enclosure, so that the finished surface of the outer side of the pipe enclosure corresponds to the waterproofing and finishing edge before construction. After the pipeline is re-measured on site, this invention does not directly change the pipe enclosure boundary according to the pipeline deviation results, but absorbs the pipeline deviation step by step according to the mortar joint compensation amount, pipeline clearance groove offset amount, internal clearance cavity adjustment amount, and multi-layer gradual transition amount, and converts the compensation results into the number of layers. Precast block data ensures that the type, clearance groove position, installation direction, and staggered joint relationship of each course of blocks correspond to the measured pipeline position. As a result, pipeline deviations are first absorbed within the masonry. Any insufficient internal compensation is then gradually transitioned to a different outer contour through continuous multi-course blocks. This ensures the clear distance for pipeline protection while reducing problems such as abrupt changes on the outer surface of the pipe enclosure, temporary on-site brick cutting, repeated trial fitting, excessively narrow wall brick edging, and discontinuous transitions in the waterproofing line. This creates a continuous and stable construction control chain for precast block processing, on-site course construction, waterproofing closure, and finishing edging, improving the quality of masonry pipe enclosure construction and the consistency of subsequent waterproofing and finishing work. Attached Figure Description

[0016] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a flowchart of the integrated masonry pipe-wrapping construction method of the present invention; Figure 2 The logic diagram for determining the outer contour control surface of the present invention is shown below; Figure 3 This is a logic diagram for pipeline deviation recursive allocation and picometer-level data generation in this invention. Detailed Implementation

[0017] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0018] This invention relates to the field of building construction technology, specifically to a construction method based on BIM and prefabricated masonry pipe wrapping. This method is applicable to construction scenarios such as water and electricity pipeline wrapping, kitchen and bathroom pipeline encapsulation, partial sealing of equipment wells, and secondary structure wall pipeline protection in building engineering.

[0019] To facilitate understanding of the relevant technical content in this embodiment, some terms are explained below.

[0020] In this embodiment, pipe enclosure refers to the construction method of using masonry materials to enclose and build water and electricity pipelines in building walls, corners, pipe wells, or kitchens and bathrooms, so that the pipelines are covered inside the masonry or within the reserved space of the masonry.

[0021] In this embodiment, the masonry pipe enclosure uses autoclaved aerated concrete blocks as the main masonry material. The autoclaved aerated concrete blocks can be processed into standard open blocks, eccentric open blocks, combined clearance blocks, bottom reference blocks, waterproof line termination blocks, wall brick edge termination reference blocks, or beam bottom and top brick transition blocks according to the pipe enclosure section, pipeline location, and number of masonry courses.

[0022] In this embodiment, the first layer refers to the first layer of masonry blocks located at the bottom when the pipe-encasing masonry is built from bottom to top. The first layer of masonry blocks is used to determine the starting position of the pipe-encasing masonry and serves as the positioning reference when the upper masonry blocks are built.

[0023] In this embodiment, the outer contour control surface of the pipe enclosure refers to the reference surface used to control the outer plaster surface, wall tile paving surface, waterproof termination surface, or the position of the root edge of the floor tile after the pipe enclosure masonry construction is completed; the outer contour control surface of the pipe enclosure may include a vertical outer control surface, a root control surface, and a corner control surface; the vertical outer control surface is used to control the flatness of the outer side of the pipe enclosure masonry and the wall tile paving surface; the root control surface is used to control the finished surface of the floor tile and the starting point of the waterproof line; the corner control surface is used to control the turning point of the waterproof line at the inside and outside corners of the pipe enclosure and the position of the wall tile edge.

[0024] In this embodiment, the waterproof line refers to the control line or closing path related to waterproof construction. It may include the waterproof layer upturn control line, the waterproof closing control line, and the waterproof turning control line. The waterproof line is used to define the continuous construction position of the waterproof layer at the root of the pipe, inside corner, outside corner, and where the pipe passes through.

[0025] In this embodiment, wall tiles refer to the decorative tiles laid on the outer wall surface of the pipe enclosure, and floor tiles refer to the decorative tiles laid at the base of the pipe enclosure or on the ground. The wall tile laying surface and the finished floor tile surface are used as related control objects for the construction quality of the outer side of the pipe enclosure, and are used to determine the position of the wall edge finishing, the ground edge finishing, and the waterproof sealing.

[0026] In this embodiment, the pipeline clearance groove refers to a groove-shaped space formed on the block to avoid water pipes, electrical pipes or other pipelines. The internal clearance cavity refers to the internal space formed by the pipeline clearance groove of one block or by the cooperation of multiple adjacent blocks to accommodate the outer envelope of the pipeline and the filling material. When referring to the offset of the groove or the adjustment of the position of the groove in this specification, the pipeline clearance groove is the object.

[0027] In this embodiment, pipeline deviation refers to the difference between the actual center position, outer envelope position, or pipeline spacing of the pipeline already installed on site and the corresponding design position in the BIM integrated model. Pipeline deviation may include lateral deviation, vertical deviation, or outer envelope deviation.

[0028] In this embodiment, the deviation recursive allocation refers to the allocation of pipeline deviations in the order of mortar joint compensation, pipeline clearance groove offset, internal clearance cavity adjustment, and multi-layer gradual transition, under the condition that the outer contour control surface of the pipe is kept stable. After the first type of compensation method reaches its allowable range, the remaining deviation that has not been absorbed is then transferred to the next type of compensation method. Through this recursive allocation method, pipeline deviations are preferentially absorbed inside the pipe masonry, and the outer finished surface of the pipe is only continuously transitioned and adjusted in the section where the internal compensation is insufficient.

[0029] In this embodiment, the precast block data at the skin number level refers to the precast processing data formed by each skin of the pipe-encasing masonry or a series of consecutive skins of masonry. It includes at least the floor, room, wall number, pipe-encasing section number, number of skins of blocks, block type, location of the pipe clearance groove, offset of the pipe clearance groove, internal clearance cavity size, mortar joint compensation, outer contour gradient transition, installation direction, and block number.

[0030] In this embodiment, mortar joint compensation refers to a construction method that absorbs pipeline deviations by adjusting the width of the mortar joints, the thickness of the mortar base, or the thickness of the local filling within the allowable mortar joint adjustment range; eccentric opening compensation refers to a construction method that keeps the outer dimensions of the masonry blocks unchanged and offsets the pipeline clearance groove relative to the center of the masonry blocks to absorb pipeline deviations; combined clearance compensation refers to a construction method that forms an internal clearance cavity by using left-right interlocking opening masonry blocks, double-layered masonry blocks, or upper and lower staggered opening masonry blocks to accommodate multiple pipelines or a large clearance space; multi-layer gradual transition compensation refers to a construction method that adjusts the internal clearance cavity and the local outer contour layer by layer within a continuous multi-layered masonry block range.

[0031] like Figure 1 As shown, the present invention provides an integrated construction method for masonry pipe wrapping based on BIM and prefabricated materials, including establishing a BIM integrated model and inputting construction control conditions, determining the outer contour control surface of the pipe wrapping, laying out lines on site and re-measuring the installed pipelines, performing pipeline deviation recursive allocation, generating prefabricated block data at the level of layers, processing and numbering the prefabricated pipe wrapping blocks, on-site trial placement and layer-by-layer staggered masonry, filling the gaps around the pipelines, sealing the waterproof line and finishing the wall and floor tiles, quality verification and construction data feedback.

[0032] In this embodiment, the outer contour control surface of the pipe is determined on the basis of meeting the pipeline protection clearance, and is coordinated with the wall tile layout, the turning path of the waterproof line and the finished surface of the floor tiles. When there is a deviation between the on-site pipeline installation position and the design position, the outer finished surface of the pipe is not directly changed based on the on-site pipeline deviation. Instead, the outer contour control surface of the pipe is first used as the construction benchmark to be maintained first, and then the pipeline deviation is allocated as the mortar joint compensation amount, the pipeline clearance groove offset amount, the internal clearance cavity adjustment amount or the multi-layer gradual transition amount, and the precast block data of the number of layers is generated according to the allocation result.

[0033] The construction method of the present invention includes the following steps.

[0034] Step S1: Establish a BIM integrated model and determine the construction control conditions for the pipe enclosure.

[0035] A comprehensive BIM model is established based on architectural construction drawings, structural construction drawings, mechanical and electrical construction drawings, and decoration detailing data. The comprehensive BIM model includes at least building walls, beams, floor slabs, kitchen and bathroom edging, water supply pipes, drainage pipes, electrical conduits, electrical boxes, and pipeline objects that require pipe wrapping.

[0036] The specifications of autoclaved aerated concrete (AAC) blocks are entered into the BIM integrated model. These specifications include block length, width, height, allowable cutting dimensions, allowable groove depth, minimum remaining solid width, allowable mortar joint adjustment range, and masonry skin height. For finishing construction, the specifications of wall tiles, the starting edge of wall tile layout, the minimum edge width of wall tiles, the specifications of floor tiles, and the finished surface elevation of floor tiles are entered into the BIM integrated model. For areas with waterproofing requirements, the height of the waterproofing line, the turning position of the waterproofing line, and the waterproofing termination requirements at the pipe base are entered into the BIM integrated model.

[0037] In this step, pipelines, blocks, waterproofing lines, wall tiles, and floor tiles are used as associated control conditions within the same pipe-wrapping construction unit to subsequently determine the outer contour control surface of the pipe wrapping, the deviation recursive allocation range, and the precast block processing parameters.

[0038] Step S2: Determine the outer contour control surface of the tube based on the BIM integrated model.

[0039] Combination Figure 2 As shown, an outer protective envelope for the pipeline is generated based on the pipeline centerline, pipe diameter, and insulation layer or sleeve size. A protective clearance is reserved outside the outer protective envelope to form the pipeline protective outer envelope. The protective clearance is determined based on the pipeline type, filling material, and construction operation space.

[0040] Based on meeting the requirements of pipeline protection outer envelope, the BIM integrated model generates candidate outer contours for pipe wrapping. These candidate outer contours can be formed according to the minimum coverage size, or they can be modified according to the block module, wall brick module, waterproof line turning path, or the edge finishing requirements of the floor tile root.

[0041] When comparing candidate outer contours for pipe enclosures, the relationships between the candidate outer contour and the net clearance for pipe protection, the processing dimensions of the blocks, the edge width of the wall tiles, the continuous path of the waterproof line, the pipe exit position, and the finished surface of the floor tiles are determined. Candidate outer contours that are likely to result in excessively narrow edge edging of wall tiles, irregular bends in the waterproof line, overlap between the pipe exit point and the tile joint, irregular joints at the base of the floor tiles, or abrupt changes in the outer surface of the pipe enclosure are not considered as preferred outer contours. After comparison, the outer contour that meets the requirements of net clearance for pipe protection, feasibility of block processing, continuous construction of the waterproof line, edge finishing, and continuity of the outer surface is determined as the control surface for the outer contour of the pipe enclosure.

[0042] In one alternative approach, the outer contour control surface of the pipe includes a vertical outer control surface, a root control surface, and a corner control surface; the vertical outer control surface is used to control the flatness of the outer side of the pipe masonry and the wall tile paving surface; the root control surface is used to control the finished surface of the floor tiles and the starting point of the waterproof line; the corner control surface is used to control the turning point of the waterproof line at the inside and outside corners of the pipe and the edge position of the wall tiles.

[0043] In this way, the outer contour control surface of the pipe is not determined solely by the outer diameter of the pipeline, but rather a unified construction benchmark is formed between pipeline protection, block processing, waterproofing termination, and wall and floor tile edging. This reduces the need for temporary adjustments to the outer surface of the pipe cover due to local pipeline misalignment, and ensures that the outer surface of the pipe cover masonry, the turning point of the waterproofing line, and the edging position of the finishing are aligned before construction. This helps improve the stability of the connection between pipe cover construction and subsequent waterproofing and finishing construction.

[0044] Step S3: Lay out the lines on site and re-measure the location of the installed pipelines.

[0045] Based on the BIM integrated model, mark the wall edge lines, pipe outer contour control lines, wall construction control lines, electrical box horizontal control lines, floor tile finished surface reference lines, and waterproof line upturn control lines on the construction site; for pipe inside corners, outside corners, and pipe penetration locations, mark the waterproof line turning nodes on site simultaneously.

[0046] After the water and electricity pipelines are installed, the actual location of the pipelines is re-measured. The re-measurement includes the center position of the pipeline, the outer diameter of the pipeline, the spacing between the pipelines, the distance between the pipeline and the wall, and the deviation of the outer envelope of the pipeline relative to the BIM design position. The re-measurement can be completed using a tape measure, straightedge, laser rangefinder, or other commonly used measuring tools on the construction site. The re-measurement results are entered into the BIM integrated model to form the actual measured data of the pipelines on site.

[0047] The on-site pipeline measurement data are mapped to the pipe-covering section and the number of masonry courses. For vertical pipelines, the pipeline location data is taken as the center of the pipeline or the outer envelope of the pipeline within the corresponding height range of each masonry course. For horizontal or diagonal pipelines, the corresponding section is taken as the range of masonry courses they pass through. After the re-measurement is completed, the walls and pipe-covering sections that need to be covered are numbered, and the numbers correspond to the wall numbers, pipeline numbers, number of masonry courses, and block numbers in the BIM integrated model.

[0048] Step S4: Perform pipeline deviation recursive allocation under the condition of prioritizing the maintenance of the outer contour control surface of the pipe.

[0049] Combination Figure 3 As shown, the actual measured data of the pipeline on site is compared with the BIM design data to obtain the pipeline deviation for each pipe section or each layer of masonry block; based on the relationship between the deviation and the adjustable range of the mortar joint, the offset range of the pipeline clearance groove, the adjustable range of the internal clearance cavity, and the allowable gradient range of the outer contour, the deviation is recursively allocated in the order from internal compensation to external transition.

[0050] Within the same pipe enclosure section, the pipeline deviation within the corresponding height range of each layer of blocks is first used as the allocation object. The mortar joint compensation, pipeline clearance groove offset, and internal clearance cavity adjustment are successively limited by their corresponding allowable ranges. The portion not absorbed by the previous compensation is used as the input of the next compensation. When the mortar joint compensation, pipeline clearance groove offset, and internal clearance cavity adjustment cannot completely absorb the pipeline deviation, the remaining deviation is used as the multi-layer gradual transition amount input into the continuous multi-layer blocks.

[0051] Specifically, first determine whether the pipeline deviation can be absorbed by the mortar joint compensation. When the pipeline deviation is within the adjustable range of the mortar joint, the deviation is allocated as the mortar joint compensation amount. At this time, the outer contour control surface of the pipe remains unchanged, the type of precast block remains unchanged, and the pipeline protection clearance is met by adjusting the width of adjacent mortar joints, the thickness of the mortar bedding, or the thickness of local filling. The mortar joint compensation should maintain the staggered joint requirements of the upper and lower layers of blocks and should not form vertical through joints due to local adjustments.

[0052] When the pipeline deviation exceeds the adjustable range of the mortar joint, the mortar joint compensation is limited to the allowable mortar joint adjustment range, and the portion not absorbed by the mortar joint compensation is transferred as the remaining deviation to the pipeline clearance groove offset judgment; if the remaining deviation can be absorbed by changing the position of the pipeline clearance groove, the remaining deviation is allocated as the pipeline clearance groove offset; at this time, the outer contour control surface of the pipe remains unchanged, the outer dimensions of the block remain unchanged, and only the pipeline clearance groove is offset relative to the center of the block in the direction of pipeline deviation; the outer solid width of the block after the eccentric opening should meet the masonry stability requirements.

[0053] When the remaining deviation exceeds the offset range of the pipeline clearance groove, or when multiple pipelines are arranged side by side, partially intersecting, or a single eccentric opening is insufficient to form an effective clearance space, the offset of the pipeline clearance groove is limited to the allowable range, and the portion not absorbed by the pipeline clearance groove offset is transferred to the internal clearance cavity for adjustment and judgment. If the remaining deviation can be absorbed by the internal clearance cavity, the remaining deviation is allocated as the internal clearance cavity adjustment amount, and combined clearance compensation is adopted. Combined clearance compensation forms the internal clearance cavity through left and right interlocking opening blocks, double-layer blocks, or upper and lower staggered opening blocks, so that multiple pipelines or offset pipelines are within the clearance range inside the pipe enclosure. For walls with a thickness of 100mm to 120mm, left and right interlocking opening blocks are preferred to make the vertical mortar joints of the upper and lower layers staggered. For walls with a thickness of 200mm and above, double-layer blocks are preferred to make the pipeline located in the clearance cavity between the blocks on both sides.

[0054] When the remaining deviation exceeds the adjustable range of the internal clearance cavity, and it is difficult to maintain the original outer contour control surface of the pipe to meet the pipeline protection clearance, the deviation exceeding the internal compensation range is allocated as a multi-layer gradual transition amount. The multi-layer gradual transition amount is allocated to the continuous multi-layer blocks and implemented layer by layer, so that the local outer contour gradually changes within the continuous multi-layer range. The gradual transition section avoids the waterproof line turning node, the pipeline exit node and the wall brick too narrow edge area, so that subsequent plastering, waterproofing and wall brick laying can be carried out continuously.

[0055] Through the above recursive allocation, for pipeline deviations within the same pipe enclosure section, the mortar joint compensation amount is first determined. Once the mortar joint compensation amount reaches the allowable range, the unabsorbed portion is used as the remaining deviation to further determine the pipeline clearance groove offset. Once the pipeline clearance groove offset reaches the allowable range, the remaining deviation is used to further determine the internal clearance cavity adjustment amount or the multi-layer gradual transition amount. Thus, pipeline deviations can be processed step-by-step from absorption within the masonry to a continuous transition along the outer contour. While ensuring the pipeline protection clearance, this approach aims to maintain the stability of the outer contour control surface of the pipe enclosure, reducing abrupt changes on the outer surface of the pipe enclosure, excessively narrow wall brick edges, and discontinuous bends in the waterproofing line.

[0056] To facilitate the explanation of the correspondence between various compensation methods and pipeline deviations, the pipe-encasing sections can be classified according to Table 1. Table 1 is used to explain the deviation handling logic. In actual projects, the selection boundary of each compensation method is determined in combination with the block specifications, the allowable adjustment range of mortar joints, the offset range of pipeline clearance grooves, the adjustment range of internal clearance cavities, pipeline protection clearance, and on-site construction conditions.

[0057] Table 1 Correspondence of Pipeline Deviation Compensation Methods

[0058] Step S5: Generate precast block data at the slab level and form a precast block list.

[0059] Based on the deviation recursive allocation result obtained in step S4, precast block data at the level of number of bricks is generated according to the pipe-encasing section and the number of brick courses. The precast block data at the level of number of bricks includes at least the floor, room, wall number, pipe-encasing section number, number of brick courses, block type, block size, pipe clearance groove position, pipe clearance groove offset, internal clearance cavity size, mortar joint compensation, multi-course gradient transition amount, waterproof line termination groove position, wall brick edge finishing reference position, and installation direction.

[0060] For mortar joint compensation sections, the precast block data at the grade level records the mortar joint compensation amount of the corresponding grade of blocks and the staggered relationship of adjacent grades of blocks; for eccentric opening compensation sections, the precast block data at the grade level records the offset direction and offset amount of the pipeline clearance groove; for combined clearance compensation sections, the precast block data at the grade level records the combination relationship of left-right intersecting openings, double-layered or upper-lower grade staggered openings, and marks the formation range of the internal clearance cavity; for multi-grade gradual transition sections, the precast block data at the grade level records the gradual transition amount and external surface adjustment direction corresponding to each grade of blocks.

[0061] When generating the precast block list, the blocks in the same room, the same wall, and the same pipe enclosure section are arranged in a bottom-up construction sequence, and the eccentric opening direction, the combination clearance relationship, the waterproof line closing position, and the transition position of the bottom and top bricks of the beam are marked. Thus, the precast block list not only records the block size, but also records the deviation compensation task undertaken by each layer of blocks and its correspondence with the blocks above and below.

[0062] By converting the deviation recursive allocation results into precast block data at the level of the number of blocks, the processing of precast blocks no longer corresponds only to uniform specifications or a single opening size, but can correspond to the actual pipeline location and compensation task for each pipe section and each block layer. This allows the block type, pipeline clearance groove offset direction, internal clearance cavity formation range, and upper and lower layer staggered joint relationship to be clearly defined in advance during the precast processing stage, reducing the need for temporary on-site cutting, repeated trial fitting, and incorrect orientation installation, and improving the matching degree between precast blocks and on-site pipeline locations.

[0063] Step S6: Process and number the prefabricated pipe-encasing blocks.

[0064] According to the precast block list, autoclaved aerated concrete blocks are processed to form at least one of the following: bottom reference block, standard open block, eccentric open block, combined clearance block, waterproof line closing block, wall brick edge reference block, and beam bottom and top brick transition block.

[0065] Bottom reference blocks are used for the first layer of masonry. Their outer surface is consistent with the outer contour control surface of the pipe enclosure, and a reference edge for the finished floor tile surface or a waterproof upturn starting groove can be set. Standard open blocks are used for sections with small pipeline deviations, and their pipeline clearance grooves correspond to the design pipeline center. Eccentric open blocks are used to absorb pipeline deviations, and their pipeline clearance grooves are offset relative to the block center while maintaining the same external dimensions. Combined clearance blocks are used for sections with multiple pipes side by side or large clearance spaces, and they form an internal clearance cavity through the cooperation of adjacent blocks. Waterproof line closing blocks are used for pipe roots, internal corners, external corners, or where pipelines exit, and their outer side is reserved with a waterproof line closing groove or closing reference surface. Wall tile edge closing reference blocks are used for pipe external corners or near the starting edge of wall tiles, and their outer surface serves as a control reference for wall tile laying. Beam bottom and top brick transition blocks are used for sections where pipes extend to the bottom of beams or the bottom of floor slabs, and their internal clearance grooves are connected to the clearance grooves of the lower open blocks.

[0066] After processing, the precast blocks are numbered, with the number corresponding to the floor, room, wall, pipe enclosure section, number of courses, and installation direction. For eccentrically opened blocks, the offset direction of the pipe clearance groove is marked on the block surface. For combined clearance blocks, they are grouped and numbered according to their combination relationship. For multi-course gradient transition blocks, they are numbered consecutively according to the transition direction and the laying sequence. For waterproof line termination blocks, the orientation of the termination groove is marked. The precast blocks are transported to the construction area in groups according to the room and installation sequence.

[0067] Step S7: On-site trial placement, layer-by-layer masonry, and filling of gaps around the pipeline.

[0068] After the precast blocks are transported to the construction area, the first layer is laid out for trial. The bottom reference block is placed within the outer contour control line of the pipe, and the positional relationship between its outer side and the outer contour control line of the pipe, the reference line of the finished surface of the floor tile, and the control line of the waterproof line is checked. After the position of the first layer is checked and approved, the bottom reference block is fixed to form the masonry reference for the upper blocks.

[0069] When laying masonry in layers, install the precast blocks from bottom to top according to their numbers; stagger the vertical mortar joints of adjacent layers, and ensure that the pipeline clearance grooves or internal clearance cavities correspond to the on-site pipeline positions; for sections with mortar joint compensation, control the width of adjacent mortar joints and the thickness of the mortar base according to the precast block data for each layer; for sections with pipeline clearance groove offset, ensure that the offset direction of the pipeline clearance groove of the eccentrically opened blocks is consistent with the deviation direction of the on-site pipeline; for combined clearance sections, install left-right interlocking open blocks, double-layered blocks, or upper and lower staggered open blocks according to the group number; for multi-layer gradual transition sections, lay the blocks layer by layer according to the continuous numbering, so that the local outer contour gradually transitions within the continuous multi-layer range.

[0070] During the masonry process, the outer contour control surface of the pipe is used as the main verification object. After each predetermined height is built, the verticality, flatness and deviation of the outer surface of the pipe are checked. After the pipeline enters the pipeline clearance groove or internal clearance cavity, the gaps around the pipeline are filled. When the gap is small, mortar is used to fill it. When the gap is large, fine stone concrete is used to fill it in layers. During the filling process, avoid pushing the pipeline to move and avoid the filling material causing the outer surface of the pipe to bulge outward.

[0071] In one alternative approach, when the gaps around the pipeline vary significantly along the height, temporary limiting is first implemented in sections at locations with larger gaps, followed by filling construction. Once the filling material has initially stabilized, the temporary limiting is removed and the surface mortar layer is replenished. This can reduce the possibility of the pipeline being squeezed and shifted during the filling process.

[0072] Step S8: Perform continuous finishing of the waterproof line and edge finishing of wall and floor tiles.

[0073] After the pipe-encasing masonry meets the conditions for subsequent construction, the outer surface, root, inside corner, outside corner, and pipe penetration point of the pipe-encasing should be treated with base treatment. After the base treatment is completed, the waterproof layer should be constructed along the sealing groove or sealing reference surface of the sealing block along the waterproof line and according to the path defined by the waterproof line, so that the waterproof layer extends from the wall surface to the root of the pipe-encasing and turns continuously along the inside or outside corner of the pipe-encasing.

[0074] At the point where the pipeline exits, an additional waterproof reinforcement layer or sealing layer is installed around the pipeline so that the waterproof layer at the pipeline exit continuously overlaps with the waterproof layer on the surface of the pipe. Since the outer contour control surface of the pipe remains stable or continuously transitions in the aforementioned steps, the waterproof layer can be continuously installed along the preset path.

[0075] When laying wall tiles, the starting line and finishing line of the wall tiles are determined based on the outer contour control surface of the pipe and the wall tile finishing reference block, so that the external corner of the pipe is formed with a whole brick, half brick, or wall tile finishing that meets the minimum finishing width; when laying floor tiles, the root edge is finished with the reference edge of the finished surface of the floor tile corresponding to the bottom reference block, so that a regular joint is formed between the floor tile and the root of the pipe.

[0076] By performing continuous waterproofing line finishing and wall and floor tile finishing after the pipe enclosure is completed, the upward path, turning path and finishing position of the waterproof layer can be consistent with the outer contour control surface of the pipe enclosure. Since the aforementioned steps have preferentially absorbed the pipeline deviation inside the masonry, the subsequent wall tile laying and floor tile finishing can be carried out along the more stable outer surface, which can reduce the risk of surface cutting, uneven finishing or discontinuous waterproofing finishing caused by irregular outer surface of the pipe enclosure.

[0077] Step S9: Conduct quality verification and transmit construction data back.

[0078] The verticality, flatness, staggered joints, net distance for pipeline protection, compactness of filling around pipelines, continuity of waterproofing lines, and edge finishing positions of wall and floor tiles of the pipe-encasing masonry are checked. The check results are compared with the pipe-encasing outer contour control surface, deviation recursive distribution results, and precast block list in the BIM integrated model.

[0079] When the verification results meet the requirements, the actual construction data will be archived to the corresponding pipe section; when there is a deviation in a certain area, it will be determined whether the deviation is due to incorrect block installation direction, excessive mortar joint adjustment, deviation of pipeline retest data, incorrect assembly sequence of combined clearance blocks, or disturbance during the filling process, and the skin number level of precast blocks in the subsequent same section will be corrected.

[0080] Through the above construction methods, a continuous construction control chain is formed in the process of pipe wrapping construction, including BIM deepening, pipeline re-survey, deviation compensation, block prefabrication, on-site masonry, waterproofing finishing, and wall and floor tile edging. The outer contour control surface of the pipe wrapping is used to stabilize the outer finished surface, and the deviation recursive allocation is used to prioritize the conversion of on-site pipeline deviations into mortar joint compensation, pipeline clearance groove offset, and internal clearance cavity adjustment. The prefabricated block data at the lap level is used to implement the compensation results into the specific block processing and installation sequence. This can reduce the situation of temporary on-site rerouting, temporary brick cutting, and repeated adjustments to the outer surface during pipe wrapping construction, and improve the consistency of pipeline wrapping, masonry staggered joints, waterproofing continuity, and finishing edge quality.

[0081] To facilitate understanding of the application of this invention in different construction scenarios, the following description, in conjunction with typical engineering scenarios, further illustrates the invention. The following embodiments are used to demonstrate the coordination relationship between the outer contour control surface of the pipe, the recursive allocation of pipeline deviation, the precast block data at the skin level, and the coordinated construction of waterproof finishing, and do not imply that the invention can only be applied to the listed construction scenarios.

[0082] Example 1 This example describes the masonry pipe wrapping construction for a single water supply riser in a bathroom. The construction area is the corner of the bathroom wall in a residential building. The water supply riser is arranged vertically along the wall. After the pipe wrapping is completed, waterproofing, wall tiling, and floor tiling are required.

[0083] Before construction, a model of the bathroom walls, water supply risers, finished floor tiles, upturned waterproof line position, and wall tile layout is created in the BIM integrated model. The model generates the outer envelope of the pipe protection based on the outer diameter of the water supply riser and the net distance of the pipe protection, and determines the outer contour control surface of the pipe wrapping by combining the wall tile specifications and the upturned height of the waterproof line. The determined outer contour control surface of the pipe wrapping avoids the narrow edge area of ​​the wall tiles and ensures that the root of the pipe wrapping can form a regular joint with the finished floor tile surface.

[0084] After the water supply riser is installed on site, its center position is re-measured. The re-measurement results show that the water supply riser has a lateral deviation relative to the center line of the BIM design. This deviation is first compared with the adjustable range of the mortar joint. The part that can be absorbed by the mortar joint is allocated as the mortar joint compensation amount. The remaining part is entered into the pipeline clearance groove offset judgment and is allocated as the pipeline clearance groove offset amount of the eccentrically opened block. This generates the precast block data corresponding to the number of layers of the pipe-encasing section, so that the outer dimensions of the eccentrically opened block remain unchanged, and the pipeline clearance groove is offset in the direction of the water supply riser deviation.

[0085] During on-site construction, the bottom reference block is installed first, and then the eccentrically opened blocks are laid layer by layer. After the water supply riser enters the eccentrically set pipeline clearance groove, the perimeter of the pipeline is filled with mortar. After the construction is completed, the outer side of the pipe cover is still consistent with the outer contour control surface of the pipe cover. Subsequently, the waterproof layer is continuously turned up along the waterproof termination reference at the bottom reference block. The wall bricks are laid with the outer side of the pipe cover as the termination reference, and the floor bricks form regular root joints along the bottom reference block.

[0086] Example 2 This example illustrates the masonry pipe wrapping construction for multiple parallel pipelines in a kitchen and bathroom. Water supply pipes, electrical conduits, and drainage branch pipes are all arranged within the construction area. The pipeline spacing is small, and some pipelines deviate from their BIM design positions after installation.

[0087] In the BIM integrated model, the overall outer envelope of multiple pipelines is first identified, and the pipe enclosure section is divided into single pipe area, parallel pipe area and transition area according to the number of pipelines, pipe diameter and spacing. The single pipe area uses standard open blocks or eccentric open blocks, the parallel pipe area uses combined yield blocks, and the transition area uses multi-layer gradient transition blocks.

[0088] After on-site re-measurement, some pipeline deviations within the contiguous area exceeded the compensation range of a single eccentrically opened block. After the deviation was allocated by the mortar joint compensation and the pipeline clearance groove offset, the remaining portion was allocated as the internal clearance cavity adjustment. For areas with a wall thickness of 100mm to 120mm, left-right forked open blocks were used, with the opening directions of adjacent upper and lower layers of blocks staggered to create a continuous clearance space inside, while ensuring that the vertical mortar joints were staggered. For areas with a local wall thickness of 200mm or more, double-layered clearance blocks were used to place the pipeline within the internal clearance cavity between the blocks on both sides.

[0089] During the masonry process, the precast blocks are installed according to their numbers, and the outer control surface of the pipe is checked after each set of layers is completed. Smaller gaps around the pipeline are filled with mortar, while larger gaps are filled with fine stone concrete in layers. When filling, the filling material is controlled to prevent the pipeline from moving or the outer surface of the pipe from bulging outward.

[0090] Example 3 This embodiment describes a multi-layer gradual transition construction when pipeline deviation exceeds the internal compensation range. In the construction area, some pipelines have large deviations due to on-site installation location limitations. It is difficult to simultaneously meet the pipeline protection clearance and minimum block width requirements while keeping the original outer contour control surface of the pipe unchanged.

[0091] In the BIM integrated model, the deviation is first recursively allocated in the order of mortar joint compensation, pipeline clearance groove offset, and internal clearance cavity adjustment. When there is still a residual deviation after the internal compensation reaches the allowable range, the residual deviation is allocated as a multi-layer gradient transition amount. The model determines the gradient range of continuous multi-layer blocks based on this transition amount, and makes the gradient range avoid waterproof line turning nodes, pipeline exits, and areas where wall bricks are too narrow.

[0092] In the precast block list, the continuous multi-layer gradient transition blocks are numbered according to the construction sequence, and the adjustment direction of the outer contour and the adjustment amount of the internal clearance cavity of each layer of blocks are recorded. During on-site construction, the construction workers install the blocks layer by layer according to the number, so that the outer side of the pipe gradually transitions within the continuous multi-layer range. After the gradient transition is completed, the outer side of the pipe still forms a continuous construction surface that can be smoothed, waterproofed, and tiled.

[0093] Example 4 This embodiment involves the integrated construction of the pipe base, waterproof line, and floor tile edging; the construction area is the base of the bathroom wall, and the pipe masonry is located at the intersection of the finished floor tile surface and the path of the waterproof line.

[0094] Before construction, the BIM integrated model determines the size of the bottom reference block based on the finished surface elevation of the floor tiles, the upturn height of the waterproof line, the outer envelope of the pipeline, and the outer contour control surface of the pipe wrapping. The outer side of the bottom reference block forms the reference edge for the finishing edge of the floor tile root, and the side against the wall forms the starting groove for the waterproof upturn or the reference surface for the waterproof finishing edge.

[0095] During on-site construction, the bottom reference block is installed on the outer contour control line of the pipe enclosure, and its positional relationship with the reference line of the finished floor tile surface and the control line of the waterproof line is checked. After the bottom reference block is installed, standard open blocks, eccentric open blocks, combined clearance blocks or gradual transition blocks are continued to be built on top of it. After the pipe enclosure masonry meets the waterproof construction conditions, the waterproof layer is turned up from the ground along the bottom reference block and continuously turned along the inside corner of the pipe enclosure. After the waterproof construction is completed, the floor tiles are laid with the edge of the bottom reference block as the reference edge.

[0096] Example 5 This embodiment describes the pipe wrapping construction in the area of ​​the top brick at the bottom of the beam. The pipe extends upward along the wall to near the bottom of the beam, and the pipe wrapping masonry needs to be connected with the construction of the sloping top brick at the bottom of the beam.

[0097] In the BIM integrated model, a transition block for the top brick of the beam bottom is generated based on the clear height of the beam bottom, the angle of the top brick masonry, the pipeline position, and the outer contour control surface of the pipe enclosure. The transition block for the top brick of the beam bottom has an inclined top surface and a pipeline clearance groove connected to the lower open block is set inside. When the on-site re-measurement shows that there is a deviation of the pipeline near the bottom of the beam, the model converts the deviation into the offset of the pipeline clearance groove inside the top brick transition block, the adjustment of the internal clearance cavity, or the gradual transition amount according to the deviation recursive allocation method.

[0098] During on-site construction, the lower pipe-encasing masonry is completed first, and then the top brick transition block is installed at the bottom of the beam. The top brick transition block is laid obliquely under the bottom of the beam, and its internal pipeline clearance groove is connected to the lower pipeline clearance groove, with the pipeline running through it. After the top brick is laid, the outer side of the pipe-encasing masonry transitions continuously with the lower masonry, and subsequent plastering, waterproofing and wall tile laying can be carried out along the same outer control surface.

[0099] As can be seen from the above embodiments, this invention uses the outer contour control surface of the pipe as the main control benchmark, and recursively allocates on-site pipeline deviations according to the mortar joint compensation amount, pipeline clearance groove offset amount, internal clearance cavity adjustment amount, and multi-layer gradual transition amount, and further generates precast block data at the layer level. This method establishes a related construction process for precast autoclaved aerated concrete blocks, staggered joint pipe wrapping in masonry, internal absorption of pipeline deviations, continuous sealing of waterproof layer, wall tile laying, and edge finishing of floor tiles. This can reduce on-site secondary adjustments and irregularities on the outer surface of the pipe wrapping, improve the construction quality of masonry pipe wrapping, and enhance the stability of subsequent waterproofing and finishing construction.

[0100] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A construction method integrating BIM and prefabricated masonry pipe wrapping, characterized in that, Includes the following steps: Step S1: Establish a BIM integrated model and determine the outer contour control surface of the pipe enclosure based on the BIM integrated model. The outer contour control surface is used to control the finished surface of the outer side of the pipe enclosure masonry, the waterproof termination position, and the finishing edge position. Specifically, when determining the outer contour control surface, candidate outer contours for the pipe enclosure are generated based on the pipe outer envelope and pipe protection clearance, block specifications and processing limitations, wall tile edge requirements, floor tile finished surface requirements, and the continuous path of the waterproof line. When comparing the candidate outer contours, the candidate outer contours are judged. The relationship between the pipeline protection clearance, block processing dimensions, wall tile edge width, continuous path of the waterproof line, pipeline exit location, and finished floor tile surface; candidate outer contours that are prone to causing excessively narrow wall tile edges, uneven waterproof line bends, overlap between pipeline exit points and brick joints, irregular joints at the base of floor tiles, or abrupt changes on the outer surface of the pipe enclosure are not considered preferred outer contours; after comparison, the outer contour that meets the requirements of pipeline protection clearance, block processing feasibility, continuous construction of the waterproof line, finishing edge, and continuity of the outer surface is determined as the outer contour control surface for the pipe enclosure. Step S2: After the water and electricity pipelines are installed, the installed pipelines are re-measured, and the actual measured data of the pipelines on site obtained from the re-measurement are compared with the design data in the BIM integrated model to obtain the pipeline deviation of the corresponding pipe-encasing section or the corresponding number of masonry layers. Step S3: Under the condition of prioritizing the stability of the outer contour control surface of the pipe, the pipeline deviation is recursively allocated. At least one compensation amount is determined to handle the pipeline deviation in the order of mortar joint compensation amount, pipeline clearance groove offset amount, internal clearance cavity adjustment amount, and multi-layer gradual transition amount. Where, if there is still a residual deviation that has not been absorbed after the previous compensation amount reaches the corresponding allowable range, the residual deviation is passed to the next compensation amount. The recursive allocation of the pipeline deviation includes: when the pipeline deviation is within the adjustable range of the mortar joint, the pipeline deviation is determined as the mortar joint compensation amount; when the pipeline deviation exceeds the adjustable range of the mortar joint, the mortar joint compensation amount is limited to the allowable adjustment range of the mortar joint, and the portion not absorbed by the mortar joint compensation is treated as the residual deviation for further judgment; when the residual deviation can be absorbed... When the position of the pipeline clearance groove is changed to absorb the deviation, the remaining deviation is determined as the pipeline clearance groove offset. When the remaining deviation exceeds the offset range of the pipeline clearance groove, the offset of the pipeline clearance groove is limited to the allowable range, and the part not absorbed by the pipeline clearance groove offset continues to be transferred. When the remaining deviation can be absorbed by the internal clearance cavity, the remaining deviation is determined as the internal clearance cavity adjustment amount. When the remaining deviation exceeds the adjustable range of the internal clearance cavity, and it is difficult to maintain the original outer contour control surface of the pipe to meet the pipeline protection clearance, the deviation exceeding the internal compensation range is determined as the multi-layer gradual transition amount, and the multi-layer gradual transition amount is distributed to the continuous multi-layer blocks to achieve layer by layer, so that the local outer contour gradually changes within the continuous multi-layer range. The gradual transition section avoids the waterproof line turning node, pipeline exit node, and the narrow edge area of ​​the wall brick. Step S4: Generate precast block data at the scale of bricks based on the recursive allocation result. This data includes at least one of the following: brick count, block type, pipeline clearance groove location, mortar joint compensation, pipeline clearance groove offset, internal clearance cavity adjustment, and multi-brick gradual transition amount, as well as installation direction and block number. Specifically, for mortar joint compensation sections, the data records the mortar joint compensation amount for the corresponding brick and the staggered joint relationship between adjacent bricks; for pipeline clearance groove offset sections, the data records the offset direction and amount of the pipeline clearance groove; for internal clearance cavity adjustment sections, the data records the formation range of the internal clearance cavity; and for multi-brick gradual transition sections, the data records the gradual transition amount and external surface adjustment direction for each brick. Step S5: Process and number the precast pipe-encasing blocks according to the precast block data of the number of layers, and lay them on site in staggered layers according to the block number and installation direction, so that the pipeline clearance groove or internal clearance cavity of the precast pipe-encasing block corresponds to the pipeline position on site.

2. The integrated construction method for masonry pipe wrapping based on BIM and prefabricated construction as described in claim 1, characterized in that, In step S1, the outer contour control surface of the pipe includes a vertical outer control surface, a root control surface, and a corner control surface; the vertical outer control surface is used to control the flatness of the outer side of the pipe masonry and the wall tile laying surface, the root control surface is used to control the finished surface of the floor tiles and the starting point of the waterproof line, and the corner control surface is used to control the turning point of the waterproof line at the inside or outside corner of the pipe and the edge position of the wall tiles.

3. The integrated construction method for BIM-based and prefabricated masonry pipe wrapping according to claim 1, characterized in that, In step S2, the measured data of the pipeline on site are matched according to the pipe section and the number of masonry courses; for vertical pipelines, the pipeline position data of the pipeline in the corresponding height range of each masonry course or the outer envelope of the pipeline is taken as the pipeline position data of that masonry course; for horizontal or diagonal pipelines, the corresponding section is taken as the range of the number of masonry courses they pass through.

4. The integrated construction method for masonry pipe wrapping based on BIM and prefabricated structures according to claim 1, characterized in that, In step S5, the prefabricated pipe-encasing block includes at least one of the following: bottom reference block, standard open block, eccentric open block, combined clearance block, waterproof line closing block, wall brick edge reference block, and beam bottom and top brick transition block; the pipeline clearance groove of the eccentric open block is offset relative to the center of the block in the direction of pipeline deviation, and the combined clearance block forms an internal clearance cavity through the cooperation of adjacent blocks.

5. The integrated construction method for BIM-based and prefabricated masonry pipe wrapping according to claim 4, characterized in that, The combined clearance blocks include left and right interlocking opening blocks, double-layer blocks, or upper and lower staggered opening blocks; when the wall thickness is 100mm to 120mm, left and right interlocking opening blocks are used to stagger the opening directions of adjacent upper and lower layers of blocks; when the wall thickness is 200mm or more, double-layer blocks are used to place the pipeline in the internal clearance cavity formed between the blocks on both sides.

6. The integrated construction method for BIM-based and prefabricated masonry pipe wrapping according to claim 1, characterized in that, In step S5, when performing staggered mortar laying on site, first install the bottom reference block and verify the positional relationship between the bottom reference block and the outer contour control line of the pipe cover, the reference line of the finished surface of the floor tile, and the control line of the waterproof line turning up. After the verification is qualified, install the precast pipe cover blocks from bottom to top according to the block number, so that the vertical mortar joints of adjacent layers of blocks are staggered, and the pipeline clearance groove or internal clearance cavity corresponds to the position of the pipeline on site.

7. The integrated construction method for BIM-based and prefabricated masonry pipe wrapping according to claim 1, characterized in that, Step S5 is followed by waterproofing line finishing and wall and floor tile finishing construction; wherein, waterproofing layer finishing construction is carried out along the finishing groove or finishing reference surface of the waterproofing line finishing block, so that the waterproofing layer extends from the wall surface to the root of the pipe and continuously turns along the inside or outside corner of the pipe; when laying wall tiles, the starting line and finishing line of the wall tiles are determined based on the outer contour control surface of the pipe and the wall tile finishing reference block; when laying floor tiles, the root edge is finished based on the reference edge of the finished surface of the floor tile corresponding to the bottom reference block.

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