Overall assembly type installation construction method for multi-specialty comprehensive pipe gallery

Abstract

The invention discloses a multi-specialty comprehensive pipe gallery overall assembly type installation construction method, and relates to the technical field of pipe gallery construction. Mounting a hoisting tool: mounting an electric hoist at the top of the upright post after the upright post is mounted; assembling a fabricated pipe gallery module: assembling the steel structure pipe gallery on the ground, in the assembling process, alternately installing a process pipeline and an electric instrument bridge frame, performing pressure test on the installed process pipeline, and after the pressure test is completed, performing corrosion prevention and heat preservation construction on the process pipeline; lifting the assembly type pipe gallery module: after the assembly work of the assembly type pipe gallery module is completed, lifting the assembled assembly type pipe gallery module to a specified height by utilizing an electric hoist suspended at the top of a stand column; and pipe gallery fixing is conducted, specifically, the pipe gallery and the stand columns are fixedly connected, and after connection and fixing are completed, the electric hoists are dismounted. According to the construction method, the construction operation risk can be reduced, the construction period is shortened, and the construction cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe gallery construction, and in particular to an overall assembled installation construction method for a multi-professional comprehensive pipe gallery. Background Art

[0002] In petrochemical plants, various process pipelines, electrical cables, instrument lines and pipelines are arranged on the pipe gallery. The independent devices or factory buildings are connected together through the pipe gallery to realize the transportation and transmission of process media and electrical instrument signals between device areas.

[0003] During the installation of pipeline corridors in petrochemical projects, it is usually necessary to prefabricate and install the steel structure of the pipeline corridor first, then prefabricate, thread and install the pipelines, and finally install the electrical instruments and carry out anti-corrosion and thermal insulation construction of the pipelines. When constructing in this way, it is difficult to achieve interlaced and overlapping operations between different disciplines, the construction period is long, and it is not conducive to project progress control. At the same time, when various disciplines are working, most of the work is carried out at high altitudes, which increases the safety risks of high-altitude operations, makes safety management more difficult, and requires more scaffolding and working platforms, resulting in a large cost investment.

[0004] The BIM technology in this manual refers to the Building Information Modeling technology. Summary of the invention

[0005] The purpose of the present invention is to provide a method for the overall assembly installation construction of a multi-professional integrated pipeline corridor to solve the problems existing in the above-mentioned prior art, reduce construction operation risks, shorten construction period and reduce construction costs.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a multi-professional integrated pipe gallery overall assembly installation construction method, comprising:

[0008] Column installation;

[0009] Installation of lifting tools: After the installation of the columns is completed, install the electric hoist on the top of the columns. First, install the cross brace on the top of every two opposite columns, and then install the electric hoist on the cross brace;

[0010] Assembly of prefabricated pipe gallery modules: The pipe gallery is assembled on the ground. During the assembly process, the process pipelines and electrical instrument bridges are installed in turn, and the installed process pipelines are pressure tested. After the pressure test is completed, the anti-corrosion and thermal insulation construction of the process pipelines is carried out;

[0011] Prefabricated pipe gallery module lifting: After the assembly of the prefabricated pipe gallery module is completed, the assembled prefabricated pipe gallery module is lifted to the specified height using the electric hoist suspended on the top of the column;

[0012] Pipe gallery fixing: Connect and fix the pipe gallery to the columns. After the connection and fixation, remove the electric hoist.

[0013] Preferably, the steel structure pipe gallery is assembled using an inverted assembly method.

[0014] Preferably, the steel structures constituting the columns and the steel structures constituting the steel structure corridor are both prefabricated in the factory. Before the prefabrication in the factory, the BIM technology is used to optimize and deepen the design of the steel structure drawings constituting the steel structure corridor, optimize the original welding connection method of the steel structure to bolt connection, and decompose the steel structure into small components that are easy to process, prefabricate, transport and assemble on site.

[0015] Preferably, the process pipeline is prefabricated in a factory. Before prefabrication, a segmented design is required and a process pipeline production list, drawings and material summary sheet are prepared.

[0016] Preferably, the steel structure pipe gallery includes an upper steel structure, a lower steel structure and interlayer support tooling, and the assembly steps of the prefabricated pipe gallery module include:

[0017] Installation of the lower support fixture of the upper steel structure: put a lower support fixture of the upper steel structure on each column, and each lower support fixture of the upper steel structure is in contact with the bottom plate of the column; adjust the elevation of the lower support fixture of the upper steel structure to make the upper surface elevation consistent;

[0018] Installation of upper steel structure: Place the cross beams and secondary beams that make up the upper steel structure on the lower support fixture of the upper steel structure according to the component numbers; fix the cross beams and secondary beams to the lower support fixture of the upper steel structure with bolts;

[0019] Installation of electrical instrument bridge and lighting fixtures: Install the electrical instrument bridge and lighting fixtures on the upper steel structure according to the design drawings;

[0020] Installation of the lower steel structure: connect the hook of the electric hoist on the top of the column to the lifting lug on the beam of the upper steel structure, and lift the upper steel structure by the electric hoist until the lifting height of the upper steel structure is greater than the height difference between the upper and lower steel structures in the design drawings; install the lower support fixture of the lower steel structure at the bottom of each column, and adjust the elevation of the lower support fixture of the lower steel structure to make the surface elevation consistent; place the beams and secondary beams that make up the lower steel structure on the lower support fixture of the lower steel structure according to the component number and fix them; install the interlayer support fixture between the upper and lower steel structures, and use bolts to connect and fix the interlayer support fixture to the beams of the upper and lower steel structures through the reserved holes. During the installation process, the electric hoist needs to cooperate to align the bolt holes of the upper and lower steel structures, so that the bolts can pass smoothly without shear force;

[0021] Installation of process pipelines: Install various process pipeline supports on the steel structure pipe gallery according to the pipeline installation design drawings; hoist the process pipelines onto the process pipeline supports for installation; perform pressure testing on the installed process pipelines; and perform anti-corrosion and thermal insulation construction on the process pipelines that have completed the pressure testing.

[0022] Preferably, before construction, BIM technology is used to establish a comprehensive three-dimensional model of the pipeline corridor, the construction process of the pipeline corridor is simulated, and the assembly installation sequence and interface of the pipeline corridor steel structure, process pipelines and electrical instruments are verified by animation demonstration to determine a feasible overall assembly installation plan for the pipeline corridor.

[0023] Preferably, the process pipeline section prefabrication steps are as follows:

[0024] The steps of factory prefabrication of process pipelines include: prefabrication of process pipelines in factory according to the process pipeline segment drawing drawn by in-depth design, selecting pipeline components according to the quantity, specification and material specified in the process pipeline segment drawing, marking the pipeline number, segment number and weld number on the segment, reasonably selecting free segment and closed segment, and processing the closed segment according to the installation length measured on site;

[0025] Check the prefabricated single-line diagram, list and number of process pipelines, and inspect and accept the prefabricated pipe sections;

[0026] For prefabricated pipe sections, the interior shall be cleaned and the pipe openings shall be sealed in time. The qualified prefabricated process pipeline sections shall be transported to the site in batches according to the on-site installation sequence.

[0027] Preferably, the prefabrication process of the steel structure components is as follows:

[0028] According to the detailed drawings of steel structure components drawn in the in-depth design, all steel structure components are machined, anti-corrosive and numbered;

[0029] Check the detailed drawings, lists and numbers of steel structure components, and inspect and accept the processed steel structure components;

[0030] The qualified steel structure components will be transported to the site in batches according to the installation order of first erecting columns and tooling and then installing beams.

[0031] Preferably, the steps of lifting the prefabricated pipe gallery module include:

[0032] Loosen the hook of the electric hoist and the lifting lug on the beam of the upper steel structure of the pipe gallery;

[0033] Steel wire ropes of the same length are symmetrically arranged at both ends of the steel structure cross beams of the lower layer of the pipe gallery, and the steel wire ropes are limited and prevented from slipping by the blocks arranged when the steel structure cross beams of the lower layer of the pipe gallery are prefabricated;

[0034] After connecting the hook of each electric hoist to the steel wire rope that passes around the lower steel structure beam of the pipe gallery, tighten the electric hoists one by one so that the lower support tooling of the lower steel structure under the lower steel structure beam of the pipe gallery just leaves the bottom plate of the column;

[0035] Through the PLC control box, simultaneously tighten the electric hoists at various positions to achieve the overall synchronous and slow lifting of the pipe gallery. When the assembled pipe gallery module is lifted by 200mm, stop lifting, check the working conditions of the electric hoists at various positions and the gaps between the lower support tooling of the lower steel structure, the lower support tooling of the upper steel structure and the columns. If there are any abnormalities or jams, adjust by tightening or loosening a single electric hoist to confirm that there are no abnormalities with the electric hoist and that there is no jamming between the lower support tooling of the lower steel structure, the lower support tooling of the upper steel structure and the columns.

[0036] Start the electric hoists synchronously again and continue to lift slowly until the lower and upper steel structures of the corridor reach the designed height, and then stop lifting.

[0037] Preferably, the electric hoist is installed on the top of the column by means of an electric hoist hanging support tooling pre-installed on the top of the column; the electric hoist hanging support tooling, the interlayer support tooling, the upper steel structure lower support tooling and the lower steel structure lower support tooling are all temporary support tooling. After the prefabricated pipe gallery module is lifted into place and fixed, the temporary support tooling and the electric hoist are removed for reuse.

[0038] Compared with the prior art, the present invention has achieved the following technical effects:

[0039] The present invention optimizes the original multi-professional assembly line operations such as steel structures, process pipelines, and electrical instrument bridges into parallel operations on site. After the application of the method, it can effectively reduce safety risks, shorten construction periods, and save costs.

[0040] The present invention lifts the entire structure into place after the overall assembly is completed, which greatly reduces the use of on-site lifting machinery, reduces fuel consumption and carbon emissions. The overall prefabricated installation construction conforms to the current development trend of prefabricated intelligent construction, and at the same time accumulates experience for the development of prefabricated technology, which is conducive to promoting the development of digital and intelligent construction and has good market promotion prospects.

[0041] The present invention prefabricates steel structures, process pipelines and other professional parts in advance, creates favorable conditions for on-site civil construction, reduces the cross-construction of civil construction and installation, and reduces the management and coordination workload of the general contractor.

[0042] The present invention adopts BIM and three-dimensional technology, saves materials, improves efficiency, and adapts to the current development trend of digital and intelligent construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A flow chart of the overall assembled installation construction method of the multi-professional integrated pipe gallery provided by the present invention;

[0045] Figure 2 This is a schematic diagram of the upper steel structure crossbeam component structure;

[0046] Figure 3 It is a schematic diagram of the structure of the lower steel structure beam member;

[0047] Figure 4 It is a schematic diagram of the secondary beam component structure;

[0048] Figure 5 This is a schematic diagram of the top column steel and electric hoist suspension support tooling structure;

[0049] Figure 6 It is a schematic diagram of the interlayer support tooling structure;

[0050] Figure 7 It is a schematic diagram of the lower support tooling of the upper and lower steel structures;

[0051] Figure 8 This is a schematic diagram of the overall ground assembly of prefabricated pipe gallery modules using BIM technology;

[0052] Fig. 9 This is a schematic diagram of using BIM technology to lift the prefabricated pipe gallery module;

[0053] Fig.10 This is a photo of the on-site electric hoist suspension support tooling on the top of the column;

[0054] Fig.11 This is a photo of the interlayer support tooling on site;

[0055] Fig.12 The photos are of the on-site support tooling for the lower support of the upper and lower steel structures;

[0056] Fig.13 The on-site photos of the lower supporting tooling of the upper and lower steel structures from another direction;

[0057] Fig.14 This is a schematic diagram of using BIM technology to lift the upper steel structure;

[0058] Fig.15On-site photos of process pipeline installation in the pipe gallery;

[0059] Fig.16 This is a schematic diagram of the setting method of the electric hoist and wire rope before using BIM technology to lift the assembled pipe gallery module;

[0060] Fig.17 This is a schematic diagram of using BIM technology to lift the prefabricated pipe gallery module;

[0061] In the figure: 1-beam steel, 2-lifting ear, 3-bolt hole for connecting beam and column, 4-bolt hole for connecting lower supporting fixture and beam, 5-bolt hole for connecting interlayer supporting fixture and beam; 21-secondary beam steel; 22-secondary beam lifting ear; 23-bolt hole for connecting secondary beam and column; 24-bolt hole for connecting lower supporting fixture and secondary beam; 31-column steel; 32-cross bracing steel; 33-electric hoist hanging steel; 34-electric hoist hanging ear; 35-construction lifting ear; 36-column steel plate; 37-through hole of column steel plate; 41-interlayer supporting steel; 42-interlayer supporting steel plate; 43-through hole of interlayer supporting steel plate; 61-lower supporting fixture; 62-through hole of lower supporting fixture. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0064] Combine the following Figures 1 to 17 , describing an embodiment of the present invention.

[0065] The present invention provides a method for the overall assembly installation of a multi-professional integrated pipe gallery. Figure 1 As shown, including:

[0066] Column installation;

[0067] Installation of lifting tools: After the column is installed, install the electric hoist on the top of the column;

[0068] Assembly of prefabricated pipe gallery modules: The pipe gallery is assembled on the ground. During the assembly process, the process pipelines and electrical instrument bridges are installed in turn, and the installed process pipelines are pressure tested. After the pressure test is completed, the anti-corrosion and thermal insulation construction of the process pipelines is carried out;

[0069] Prefabricated pipe gallery module lifting: After the assembly of the prefabricated pipe gallery module is completed, the assembled prefabricated pipe gallery module is lifted to the specified height using the electric hoist suspended on the top of the column;

[0070] Pipe gallery fixing: Connect and fix the pipe gallery to the columns. After the connection and fixation, remove the electric hoist.

[0071] The present invention optimizes the original multi-professional assembly line operations such as steel structures, process pipelines, and electrical instrument bridges into parallel operations on site. After the application of the method, it can effectively reduce safety risks, shorten construction periods, and save costs. Secondly, the present invention adopts the method of lifting the entire structure into place after the overall assembly is completed, which greatly reduces the use of on-site lifting machinery, reduces fuel consumption and carbon emissions, and the overall prefabricated installation construction is in line with the current development trend of prefabricated intelligent construction. At the same time, it accumulates experience for the development of prefabricated technology, which is conducive to promoting the development of digital and intelligent construction, and has good market promotion prospects. The present invention adopts the technology of synchronous lifting of multiple electric hoists, and the lifting process is safe and smooth, which greatly reduces the use of lifting machinery, reduces material consumption, and reduces costs.

[0072] In some embodiments, based on the above embodiments, the method further includes: connecting adjacent process pipelines and adjacent electrical instrument bridges:

[0073] 1) Connect the process pipelines, electrical instrument bridges, etc. on the overall lifted prefabricated pipe gallery with the process pipelines, electrical instrument bridges on the adjacent span pipe gallery that has been in place, inspect and accept the construction quality of the connection parts, and repaint and insulate the welding parts.

[0074] 2) Organize the relevant construction records of the steel structure, process pipelines, electrical and instrument bridges, and anti-corrosion and thermal insulation of the pipeline corridor, organize the owner and the supervision unit to inspect and accept the installation work of the integrated pipeline corridor, and handle the acceptance visa records.

[0075] In some embodiments, the prefabricated pipe gallery modules are assembled using a flip assembly method.

[0076] Specifically, the pipe gallery includes an upper steel structure, a lower steel structure and interlayer support tooling. The assembly steps of the prefabricated pipe gallery module include:

[0077] 1) Installation of the lower support tooling of the upper steel structure: Fig.12 and Figure 3As shown, an upper steel structure lower support fixture is put on each column, and a 2mm thick 150mm*150mm PTFE plate is attached to the inner side of the contact surface between the support fixture and the column. During the construction process, the painted surface of the steel structure column is isolated and protected with paint. The lower support fixtures of each upper steel structure are in contact with the bottom plate of the column; the elevation of the lower support fixtures of the upper steel structure is adjusted to make the upper surface elevation consistent. The adjustment process includes: measuring the upper surface elevation of each fixture, and adjusting the lower elevation position with shims to ensure consistent elevation.

[0078] 2) Installation of upper steel structure: Place the cross beams and secondary beams that make up the upper steel structure on the lower support fixture of the upper steel structure according to the component numbers; fix the cross beams and secondary beams to the lower support fixture of the upper steel structure with bolts;

[0079] 3) Installation of electrical bridge and lighting fixtures: Install the electrical bridge and lighting fixtures on the upper steel structure according to the design drawings; specifically, transport the electrical bridge materials on the corridor to the vicinity of the corridor foundation according to the design drawings. Install the electrical bridge on the upper steel structure of the corridor, connect and fix the bridge, and install the bridge jumper wire. Install the lighting fixtures designed in the drawings on the side of the upper steel structure of the corridor, and connect the lighting fixture cable conduit to the electrical bridge.

[0080] 4) Installation of the lower steel structure: connect the hook of the electric hoist on the top of the column to the lifting lug on the beam of the upper steel structure, and lift the upper steel structure by the electric hoist until the lifting height of the upper steel structure is greater than the height difference between the upper and lower steel structures in the design drawings; install the lower support tooling of the lower steel structure at the bottom of each column, and adjust the elevation of the lower support tooling of the lower steel structure to make the surface elevation consistent; place the beams and secondary beams that make up the lower steel structure on the lower support tooling of the lower steel structure according to the component number and fix them; install the interlayer support tooling between the upper and lower steel structures, and use bolts to connect and fix the interlayer support tooling to the beams of the upper and lower steel structures through the reserved holes. During the installation process, the electric hoist needs to cooperate to align the bolt holes of the upper and lower steel structures, so that the bolts can pass smoothly without shear force;

[0081] 5) Installation of process pipelines: Install various process pipeline supports on the pipe gallery according to the pipeline installation design drawings; hoist the process pipelines onto the process pipeline supports for installation; perform pressure tests on the installed process pipelines; and perform anti-corrosion and thermal insulation construction on the process pipelines that have completed the pressure tests.

[0082] The specific steps for process pipeline installation are as follows:

[0083] 1) According to the pipeline installation design drawings, install various process pipeline supports on the multi-span pipeline corridor. The position and form of the supports shall meet the requirements of the design drawings. The sliding surface of the guide support or sliding support shall be clean and flat, and shall not be skewed or stuck. For pipelines with thermal displacement, when there is no provision in the design documents, the support installation position shall be offset from the center of the support surface in the opposite direction of the displacement, and the offset shall be 1 / 2 of the displacement value. The insulation layer shall not hinder its displacement.

[0084] 2) The prefabricated pipeline sections that have passed the prefabrication acceptance are hoisted to the lower steel structure of the corridor using a hand winch or a small crane for installation and connection. The installation position and elevation shall comply with the design drawings and specification requirements. Self-developed pipeline installation auxiliary fixtures and pipeline hoisting auxiliary fixtures shall be used during the installation of process pipelines.

[0085] 3) Carry out non-destructive testing on the welding seams assembled on the ground. The testing proportion and quantity shall comply with the design drawings and specification requirements. The pipeline welds that fail the test shall be repaired and expanded in accordance with GB50184-2011 "Industrial Metal Pipeline Engineering Construction Quality Acceptance Code".

[0086] 4) For pipelines that have been installed and passed non-destructive testing, divide the pipelines into several pressure test packages for pressure testing according to the pipeline medium, material, design pressure and test medium requirements. This project requires a separate pressure test for each pipeline in the module.

[0087] 5) When the pipeline is pressure tested, a temporary pressure test pipeline interface, pressure test safety valve, pressure test pressure gauge, pressure test discharge port (pressure test exhaust port) and pressure test blind plate, etc. need to be set up. After the pressure test package passes the pressure test, the pressure test visa should be processed in time and temporary components such as the temporary pressure test pipeline, temporary blind plate and pressure test safety valve should be removed.

[0088] 6) After the pipeline pressure test is completed, anti-corrosion repair and thermal insulation construction shall be carried out on the process pipelines on the pipeline corridor in accordance with the design requirements, and the acceptance visa shall be issued after acceptance by the construction, supervision and other relevant units.

[0089] This embodiment provides a specific assembly method for the pipe gallery.

[0090] The auxiliary fixture for pipeline installation includes a mobile vehicle, a mechanical telescopic arm, a base frame, a first telescopic rod and a supporting plate. The mechanical telescopic arm is installed on the mobile vehicle, one end of the base frame is rotatably installed on the mechanical telescopic arm, one end of the first telescopic rod is rotatably matched with the mechanical telescopic arm, and the other end of the first telescopic rod is rotatably matched with the base frame. The supporting plate is arranged on the base frame, and there are no less than 2 supporting plates, and all supporting plates are in a parallel state. The supporting plates are provided with arc notches, and all arc notches are on the same virtual cylinder. In this auxiliary fixture for pipeline installation, a mechanical telescopic arm is installed on the mobile vehicle. Since the base frame is rotatably installed on the telescopic mechanical arm, and a first telescopic rod is arranged between the base frame and the mechanical telescopic arm, the first telescopic rod can drive the base frame to rotate on the mechanical telescopic arm when it is extended and retracted. In this fixture, since a supporting plate is arranged on the base frame, and the supporting plate is provided with an arc notch, and all arc notches are located in a virtual cylinder, when the pipeline is placed on the arc notch of the supporting plate, the supporting plate can be used to support the pipe. Therefore, when this type of clamp is used, the supporting sheet can be used to support the pipeline, and then the pipeline can be moved to the position where construction is required. With the help of the mechanical telescopic arm and the adjustment function of the first telescopic rod, the position of the pipeline can be adjusted to facilitate subsequent construction operations. After the construction is completed, the supporting sheet and the pipeline are separated from each other. The structure of the pipeline installation auxiliary fixture can be found in the Chinese patent application with patent number ZL202322123912.5.

[0091] The pipeline lifting auxiliary tooling fixture includes a chassis, a through hole is opened at the center point of the chassis, three clamping blocks are arranged in the chassis, the three clamping blocks are distributed around the hole edge of the through hole with equal distance and arc, the contact planes of the three clamping blocks are distributed in an equilateral triangle, three first contact surfaces and three second contact surfaces are arranged at the outer edge of the chassis, the first contact surfaces and the second contact surfaces are arranged at intervals at the outer edge of the chassis, an inner groove is opened at the first contact surface of the chassis, and a folding lifting ring is rotatably arranged at the inner groove. The method of using this kind of fixture is as follows: first, place the chassis on the ground, and make the chassis and the ground in a vertical state, and the first contact surface is in contact with the ground. The chassis is placed vertically on the ground by the action of the first contact surface, and then the pipe to be hoisted is passed through the through hole on the chassis. Since the through hole has both arc-shaped hole walls and planar contact surfaces, when the pipe is inserted into the through hole on the chassis, the through hole can stably support the pipe. At the same time, the gap between the pipe and the through hole and the contact surface can be filled with branches and cork, so that it can be ensured that there is no relative sliding between the pipe and the chassis. By adopting the above method, the pipe to be hoisted is provided with at least two of the above fixtures (it is necessary to ensure that at least one of the two ends of the pipe is provided). Before hoisting, turn the folding ring at the inner groove so that the folding ring is in an exposed state, and the crane can lift the ring by hooking the folding ring on the chassis. For the structure of the auxiliary fixture for pipe hoisting, refer to the Chinese patent application with patent number ZL202322124628.X.

[0092] In some embodiments, the pipe gallery is fixedly connected to the column as follows:

[0093] 1) The multi-span steel structure pipe gallery lifted into place is bolted to each column using L-shaped connecting plates.

[0094] 2) Each connection node is fastened with high-strength bolts, and the fastener connection is carried out in accordance with the "Steel Structure Engineering Construction Quality Acceptance Standard" (GB50205-2020). Before installation, the high-strength bolts must be retested for relevant performance and a retest report must be issued.

[0095] 3) High-strength bolts should be inserted into bolt holes freely, and bolt holes cannot be enlarged by gas cutting.

[0096] 4) The final tightening torque inspection should be carried out 1 hour and 48 hours after the final tightening of the high-strength large hexagon head bolt connection pair is completed. The inspection results should comply with the provisions of the Technical Code for High-Strength Bolt Connections for Steel Structures JGJ82-2011.

[0097] In some embodiments, the steel structures that make up the columns and the steel structures that make up the pipe gallery are prefabricated in the factory. Before the prefabrication in the factory, the BIM technology is used to optimize and deepen the design of the steel structure drawings that make up the pipe gallery, and the original welding connection method of the steel structure is optimized to bolt connection. The steel structure is decomposed into small components that are convenient for factory processing, prefabrication, transportation and on-site assembly. The components are numbered one by one according to parameters such as the installation position, model and specifications of each component, forming a steel structure component processing list and steel structure component processing detailed drawings, and a material summary table to facilitate subsequent factory prefabrication.

[0098] This embodiment can effectively reduce the welding workload, facilitate on-site installation, and improve efficiency. At the same time, prefabrication of the steel structure can advance the processing work and facilitate construction period control.

[0099] In some embodiments, the process pipeline is prefabricated in a factory. Before prefabrication, a segmented design is required and a process pipeline production list, drawings, and material summary sheet are prepared.

[0100] In some embodiments, such as Figure 8-Figure 9 As shown in the figure, before construction, BIM technology is used to build a comprehensive three-dimensional model of the pipeline corridor, simulate the construction process of the pipeline corridor, and use animation demonstration to verify the installation sequence and interface of the pipeline corridor's steel structure, process pipelines, and electrical instruments to determine a feasible overall prefabricated installation plan for the pipeline corridor.

[0101] In some embodiments, the process pipeline segment prefabrication steps are as follows:

[0102] The steps of factory prefabrication of process pipelines include: prefabrication of process pipelines in factory according to the process pipeline segment drawing drawn by in-depth design, selecting pipeline components according to the quantity, specification and material specified in the process pipeline segment drawing, marking the pipeline number, segment number and weld number on the segment, reasonably selecting free segment and closed segment, and processing the closed segment according to the installation length measured on site;

[0103] Check the prefabricated single-line diagram, list and number of process pipelines, and inspect and accept the prefabricated pipe sections;

[0104] For prefabricated pipe sections, the interior shall be cleaned and the pipe openings shall be sealed in time. The qualified prefabricated process pipeline sections shall be transported to the site in batches according to the on-site installation sequence.

[0105] The detailed segmentation of process pipeline design includes the following steps:

[0106] 1) Decompose the process pipelines of the pipe gallery into straight pipe sections that are convenient for interlaced construction with steel structure assembly and can be prefabricated in factories. The length of the pipe section is limited to two spans of the pipe gallery (not exceeding 12m).

[0107] 2) The straight pipe section of the process pipeline is combined with valve flanges, pipe reducers, elbows, etc. to form a pipe section structure.

[0108] 3) Number the process pipe sections one by one, and the numbers include device number, area code, pipeline number, pipe section number, etc., to form a process pipeline section diagram.

[0109] 4) Prepare a list of factory-prefabricated pipe sections, drawings, and material summary tables.

[0110] In some embodiments, the prefabrication process of the steel structure member is as follows:

[0111] According to the detailed drawings of steel structure components drawn in the in-depth design, all steel structure components shall be machined, anti-corrosive and numbered; Figure 2 to Figure 4 , which are schematic diagrams of the upper steel structure cross beam component, the lower steel structure cross beam component structure and the secondary beam component structure.

[0112] The upper and lower steel structure crossbeam components include crossbeam steel 1, lifting lugs 2, crossbeam and column connecting bolt holes 3, lower support fixture and crossbeam connecting bolt holes 4, and interlayer support fixture and crossbeam connecting bolt holes 5.

[0113] The secondary beam component includes a secondary beam steel 21, a secondary beam hanging lug 22, a bolt hole 23 for connecting the secondary beam with a column, and a bolt hole 24 for connecting a lower supporting tooling with the secondary beam.

[0114] Check the detailed drawings, lists and numbers of steel structure components, and inspect and accept the processed steel structure components;

[0115] The qualified steel structure components will be transported to the site in batches according to the installation order of first erecting columns and tooling and then installing beams.

[0116] In some embodiments, the step of lifting the assembled pipe gallery module includes:

[0117] Loosen the hook of the electric hoist and the lifting lug on the beam of the upper steel structure of the pipe gallery;

[0118] Steel wire ropes of the same length are symmetrically arranged at both ends of the steel structure cross beams of the lower layer of the pipe gallery, and the steel wire ropes are limited and prevented from slipping by the blocks arranged when the steel structure cross beams of the lower layer of the pipe gallery are prefabricated;

[0119] After connecting the hook of each electric hoist to the steel wire rope that passes around the lower steel structure beam of the pipe gallery, tighten the electric hoists one by one so that the lower support tooling of the lower steel structure under the lower steel structure beam of the pipe gallery just leaves the bottom plate of the column;

[0120] Through the PLC control box, simultaneously tighten the electric hoists at various positions to achieve the overall synchronous and slow lifting of the pipe gallery. When the assembled pipe gallery module is lifted by 200mm, stop lifting, check the working conditions of the electric hoists at various positions and the gaps between the lower support tooling of the lower steel structure, the lower support tooling of the upper steel structure and the columns. If there are any abnormalities or jams, adjust by tightening or loosening a single electric hoist to confirm that there are no abnormalities with the electric hoist and that there is no jamming between the lower support tooling of the lower steel structure, the lower support tooling of the upper steel structure and the columns.

[0121] Start the electric hoists synchronously again and continue to lift slowly until the lower and upper steel structures of the corridor reach the designed height, and then stop lifting.

[0122] In some embodiments, such as Fig.10 As shown, the electric hoist is installed on the top of the column through the electric hoist hanging support tooling pre-installed on the top of the column; the electric hoist hanging support tooling, the interlayer support tooling, the upper steel structure lower support tooling and the lower steel structure lower support tooling are all temporary support tooling. After the prefabricated pipe gallery module is lifted into place and fixed, the temporary support tooling and the electric hoist are removed for reuse.

[0123] The design steps of temporary support tooling are as follows:

[0124] 1) The temporary support tools required for the prefabricated installation of the pipe gallery are divided into three types according to the installation position and the connection tooling form, namely the electric hoist suspension support tooling on the top of the steel structure column of the pipe gallery, the interlayer support tooling of the pipe gallery and the lower support tooling.

[0125] 2) The electric hoist suspension support fixture is set at the top of each column; the interlayer support fixture is set between the upper steel structure and the lower steel structure, and the length is consistent with the distance between the upper steel structure and the lower steel structure; the lower support fixture is set at the connection between the steel structure beam and the column.

[0126] 3) Design and verify the specifications of temporary supports, issue detailed drawings of temporary supports and temporary connection tools and number them, include them in the list of steel structure components. Temporary tools mainly use bolt connection method and can be recycled.

[0127] Figure 5 This is a schematic diagram of the top column steel and electric hoist suspension support tooling structure.

[0128] Figure 6 Schematic diagram of the interlayer support tooling structure.

[0129] Figure 7 Schematic diagram of the lower support tooling for the upper and lower steel structures.

[0130] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A method for overall assembly installation of a multi-disciplinary integrated pipe gallery, characterized in that: include: Column installation; Installation of lifting tools: After the column is installed, install the electric hoist on the top of the column; Assembly of prefabricated pipe gallery modules: Assemble the steel structure pipe gallery on the ground. During the assembly process, install the process pipelines and electrical instrument bridges, and perform pressure testing on the installed process pipelines. After the pressure testing is completed, carry out anti-corrosion and thermal insulation construction on the process pipelines. Prefabricated pipe gallery module lifting: After the assembly of the prefabricated pipe gallery module is completed, the assembled prefabricated pipe gallery module is lifted to the specified height using the electric hoist suspended on the top of the column; Pipe gallery fixing: Connect and fix the pipe gallery to the columns. After the connection and fixation, remove the electric hoist.

2. The overall assembly installation construction method of the multi-professional integrated pipe gallery according to claim 1 is characterized by: The steel structure pipe gallery is assembled using the inverted assembly method.

3. The overall assembly installation construction method of the multi-professional integrated pipe gallery according to claim 1 is characterized by: The steel structures that make up the columns and the steel structures that make up the steel structure corridor are all prefabricated in the factory. Before prefabrication in the factory, BIM technology is used to optimize and deepen the design of the steel structure drawings that make up the steel structure corridor, optimize the original welding connection method of the steel structure to bolt connection, and decompose the steel structure into small components that are easy to process, prefabricate, transport and assemble on site.

4. The overall assembly installation construction method of the multi-professional integrated pipe gallery according to claim 2 is characterized by: The process pipeline is prefabricated in the factory. Before prefabrication, it is necessary to carry out segmented design and prepare the process pipeline production list, drawings and material summary table.

5. The overall assembly installation construction method of the multi-professional integrated pipe gallery according to claim 2 is characterized by: The steel structure pipe gallery includes the upper steel structure, the lower steel structure and the interlayer support tooling. The assembly steps of the prefabricated pipe gallery module include: Installation of the lower support fixture of the upper steel structure: put a lower support fixture of the upper steel structure on each column, and each lower support fixture of the upper steel structure is in contact with the bottom plate of the column; adjust the elevation of the lower support fixture of the upper steel structure to make the upper surface elevation consistent; Installation of upper steel structure: Place the cross beams and secondary beams that make up the upper steel structure on the lower support fixture of the upper steel structure according to the component numbers; fix the cross beams and secondary beams to the lower support fixture of the upper steel structure with bolts; Installation of electrical instrument bridge and lighting fixtures: Install the electrical instrument bridge and lighting fixtures on the upper steel structure according to the design drawings; Installation of the lower steel structure: connect the hook of the electric hoist on the top of the column to the lifting lug on the beam of the upper steel structure, and lift the upper steel structure by the electric hoist until the lifting height of the upper steel structure is greater than the height difference between the upper and lower steel structures in the design drawings; install the lower support fixture of the lower steel structure at the bottom of each column, and adjust the elevation of the lower support fixture of the lower steel structure to make the surface elevation consistent; place the beams and secondary beams that make up the lower steel structure on the lower support fixture of the lower steel structure according to the component number and fix them; install the interlayer support fixture between the upper and lower steel structures, and use bolts to connect and fix the interlayer support fixture to the beams of the upper and lower steel structures through the reserved holes. During the installation process, the electric hoist needs to cooperate to align the bolt holes of the upper and lower steel structures, so that the bolts can pass smoothly without shear force; Installation of process pipelines: Install various process pipeline supports on the steel structure pipe gallery according to the pipeline installation design drawings; hoist the process pipelines onto the process pipeline supports for installation; perform pressure testing on the installed process pipelines; and perform anti-corrosion and thermal insulation construction on the process pipelines that have completed the pressure testing.

6. The overall assembly installation construction method of the multi-professional integrated pipe gallery according to claim 1 is characterized by: Before construction, BIM technology is used to build a three-dimensional model of the integrated pipeline corridor, simulate the construction process of the integrated pipeline corridor, and use animation demonstration to verify the assembly installation sequence and interface of the steel structure pipeline corridor, process pipelines and electrical instrument bridge frame to determine a feasible overall assembly installation plan for the pipeline corridor.

7. The overall assembly installation construction method of the multi-professional integrated pipe gallery according to claim 4 is characterized by: The steps for prefabrication of process pipeline sections are as follows: The steps of factory prefabrication of process pipelines include: prefabrication of process pipelines in factory according to the process pipeline segment drawing drawn by in-depth design, selecting pipeline components according to the quantity, specification and material specified in the process pipeline segment drawing, marking the pipeline number, segment number and weld number on the segment, reasonably selecting free segment and closed segment, and processing the closed segment according to the installation length measured on site; Check the prefabricated single-line diagram, list and number of process pipelines, and inspect and accept the prefabricated pipe sections; For prefabricated pipe sections, the interior shall be cleaned and the pipe openings shall be sealed in time. The qualified prefabricated process pipeline sections shall be transported to the site in batches according to the on-site installation sequence.

8. The overall assembly installation construction method of the multi-professional integrated pipe gallery according to claim 3 is characterized by: The prefabrication steps of steel structure components are as follows: According to the detailed drawings of steel structure components drawn in the in-depth design, all steel structure components are machined, anti-corrosive and numbered; Check the detailed drawings, lists and numbers of steel structure components, and inspect and accept the processed steel structure components; The qualified steel structure components will be transported to the site in batches according to the installation order of first erecting columns and tooling and then installing beams.

9. The overall assembly installation construction method of the multi-professional integrated pipe gallery according to claim 3 is characterized by: The steps for lifting the prefabricated pipe gallery module include: Loosen the hook of the electric hoist and the lifting lug on the beam of the upper steel structure of the pipe gallery; Steel wire ropes of the same length are symmetrically arranged at both ends of the steel structure cross beams of the lower layer of the pipe gallery, and the steel wire ropes are limited and prevented from slipping by the blocks arranged when the steel structure cross beams of the lower layer of the pipe gallery are prefabricated; After connecting the hook of each electric hoist to the steel wire rope that passes around the lower steel structure beam of the pipe gallery, tighten the electric hoists one by one so that the lower support tooling of the lower steel structure under the lower steel structure beam of the pipe gallery just leaves the bottom plate of the column; Through the PLC control box, simultaneously tighten the electric hoists at various positions to achieve synchronous and slow lifting of the assembled pipe gallery module. When the assembled pipe gallery module is lifted 200mm, stop lifting, check the working conditions of the electric hoists at various positions and the gaps between the lower support tooling of the lower steel structure, the lower support tooling of the upper steel structure and the columns. If there are any abnormalities or jams, adjust by tightening or loosening a single electric hoist to confirm that there are no abnormalities with the electric hoist and that there is no jamming between the lower support tooling of the lower steel structure, the lower support tooling of the upper steel structure and the columns. Start the electric hoists synchronously again and continue to lift slowly until the lower and upper steel structures of the corridor reach the designed height, and then stop lifting.

10. The overall assembly installation construction method of the multi-professional integrated pipe gallery according to claim 5 is characterized by: The electric hoist is installed on the top of the column through the electric hoist hanging support tooling pre-installed on the top of the column; the electric hoist hanging support tooling, interlayer support tooling, upper steel structure lower support tooling and lower steel structure lower support tooling are all temporary support tooling. After the prefabricated pipe gallery module is lifted into place and fixed, the temporary support tooling and the electric hoist are removed for reuse.

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