Building rectification method based on substrate water jetting
Patent Information
- Application Number
- CN202611149581.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-31
- Publication Date
- 2026-08-28
AI Technical Summary
[0004]本申请的目的在于解决现有技术中，建筑纠偏无法兼顾高效、低成本和高安全性的问题
[0015] This application utilizes pile driving holes and improves the water jetting and soil flushing process. On the one hand, it does not require outdoor space or large-sized openings in the raft slab, thus controlling costs and improving safety. On the other hand, it achieves efficient and controllable deviation correction through a two-step water jetting and air flushing process.
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Figure CN122649463A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of building alignment technology, and in particular to a building alignment method based on substrate water jetting. Background Technology
[0002] Uneven settlement of soft soil foundations can cause buildings to tilt severely. In order not to damage the overall structure of the building, forced settlement is often used on the side with less settlement to increase the settlement and achieve the purpose of correcting the building's tilt.
[0003] The forced settlement correction process includes different techniques such as soil removal, radial well water jetting, immersion, and dewatering. Soil removal correction requires an open space outside the building; immersion and dewatering methods are relatively slow; while the conventional radial well water jetting correction process requires sinking deep wells and then using high-pressure water to flush the deep soil, promoting ground settlement and achieving correction. This method is faster, but the radial wells must be at least 1.2m in size, requiring either an indoor opening in the raft foundation or an outdoor space. Furthermore, the radial wells themselves cause significant disturbance to the foundation soil, posing not only high safety risks but also continued settlement after correction, and sealing the wells can easily lead to raft foundation leakage. Summary of the Invention
[0004] The purpose of this application is to address the problem that existing technologies for building alignment correction cannot simultaneously achieve high efficiency, low cost, and high safety. Therefore, this application provides a building alignment correction method based on base water jetting, which utilizes pile driving holes and a two-step water jetting + air flushing process to improve alignment correction efficiency, control costs, and enhance safety during construction.
[0005] This application provides a building deviation correction method based on substrate water jetting, including: S1 has multiple pile driving holes spaced 2-3m apart on the building raft slab; S2 manufactures a high-pressure water pipe and a first high-pressure air pipe. Both pipes are vertically inserted into each pile hole to flush with air and water, so as to form a primary collapse zone and cause the raft slab at the corresponding position to settle. S3 manufactures a second high-pressure air pipe. The bottom of the second high-pressure air pipe is bent to form a horizontal extension end, which is inserted into each primary collapse zone to perform horizontal air flushing. Combined with high-pressure water flushing, the adjacent primary collapse zones are horizontally connected to form the final collapse zone, thereby accelerating the settlement of the raft slab at the corresponding location. After the settlement correction is in place, pile foundation construction will proceed in S4.
[0006] In some embodiments, S4 is followed by: S5 pile driving holes are backfilled with stones to fill the gaps around the pile. S6 is used to pour concrete to seal the hole.
[0007] In some embodiments, the diameter of the pile driving hole is 300-600 mm.
[0008] In some embodiments, the depth of the primary collapse zone is no greater than 1 / 2 the length of a single pile.
[0009] In some embodiments, the high-pressure water pipe, the first high-pressure air pipe, and the second high-pressure air pipe are all rigid pipes.
[0010] In some embodiments, the high-pressure water pipe and the first high-pressure air pipe / second high-pressure air pipe are located at the two ends furthest apart on the cross-section of the pile hole.
[0011] In some embodiments, the extruded slag and mud are cleaned up during the formation of the primary collapse zone and the final collapse zone.
[0012] In some embodiments, in S3, the second high-pressure air pipe uniformly injects air along the circumference of the pile hole.
[0013] In some embodiments, both the primary collapse zone and the final collapse zone ensure that the internal water level is such that the outlet ends of the corresponding first high-pressure gas pipe and the second high-pressure gas pipe are submerged.
[0014] Beneficial effects:
[0015] This application utilizes pile driving holes and improves the water jetting and soil flushing process. On the one hand, it does not require outdoor space or large-sized openings in the raft slab, thus controlling costs and improving safety. On the other hand, it achieves efficient and controllable deviation correction through a two-step water jetting and air flushing process.
[0016] Other features and corresponding beneficial effects of this application will be described in the latter part of the specification, and it should be understood that at least some of the beneficial effects will become obvious from the description in this application. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the pile hole distribution in one embodiment of this application; Figure 2 This is a schematic diagram illustrating the formation of a primary collapse zone in one embodiment of this application; Figure 3 This is a schematic diagram illustrating the formation of multiple primary collapse zones in one embodiment of this application; Figure 4 This is a schematic diagram illustrating the final collapse zone formation process in one embodiment of this application; Figure 5 This is a schematic diagram illustrating the formation of the final collapse zone in one embodiment of this application; Figure 6 This is a schematic diagram of the pile foundation after construction in one embodiment of this application; Figure 7 This is a schematic diagram of the backfilling with stones in one embodiment of this application; Figure 8This is a schematic diagram of the concrete sealing process in one embodiment of this application.
[0018] Explanation of reference numerals in the attached figures: 1-Raft slab, 2-Pile driving hole, 3-High-pressure water pipe, 4-First high-pressure air pipe, 5-Second high-pressure air pipe, 6-Primary collapse zone, 7-Final collapse zone, 8-Reinforcing pile, 9-Backfill with gravel, 10-Pouring concrete. Detailed Implementation
[0019] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with preferred embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details will be included in the following description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0020] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0021] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more. Unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0022] Please see Figures 1-8 , Figure 1 This is a schematic diagram of the distribution of pile holes 2 in one embodiment of this application; Figure 2 This is a schematic diagram illustrating the formation of a primary collapse zone 6 in one embodiment of this application; Figure 3 This is a schematic diagram illustrating the formation of multiple primary collapse zones 6 in one embodiment of this application; Figure 4 This is a schematic diagram illustrating the formation process of the final collapse zone 7 in one embodiment of this application; Figure 5 This is a schematic diagram illustrating the formation of the final collapse zone 7 in one embodiment of this application; Figure 6 This is a schematic diagram of the pile foundation after construction in one embodiment of this application; Figure 7 This is a schematic diagram of the backfilling of stones 9 in one embodiment of this application; Figure 8 This is a schematic diagram of the concrete sealing process in one embodiment of this application.
[0023] This application provides a building correction method based on base water jetting, applicable to buildings with an integral raft foundation 1 or newly added integral raft foundation 1 for reinforcement. It uses the pile holes 2 (with construction reinforcement piles 8) that are originally needed during construction to replace the sinking deep well (usually with a diameter of not less than 1.2m, while the diameter of the pile hole 2 is usually much smaller than 1.2m). This method can control costs, can be carried out indoors, and is safe and controllable, and the raft foundation 1 is not prone to leakage. At the same time, the single water jetting and soil flushing process is changed to a two-step water jetting + air flushing process. The water jetting forms an upward overflow of water, carrying away the soil debris, and the high-pressure air agitates the groundwater, continuously flushing the foundation soil, expanding the collapse area, reducing the foundation bearing capacity, promoting foundation settlement, and achieving rapid directional correction.
[0024] Since this method requires a large amount of water resources, it is particularly suitable for building correction in areas with high groundwater levels. It can utilize groundwater to significantly reduce the consumption of tap water, thereby saving water resources, controlling costs, and requiring less manual labor.
[0025] For example, in southern regions where buildings undergoing correction have basements, the groundwater level tends to be higher during the summer and autumn. If the groundwater level exceeds the raft slab 1, the groundwater will slowly rise through the pile driving holes 2. By using sump wells or constructing water-retaining dikes around the basement, the groundwater can be stored and used as much as possible, which can greatly reduce the consumption of tap water.
[0026] Specifically, this method includes: See Figure 1 S1 opens multiple pile holes 2 at intervals of 2-3m on the building raft 1.
[0027] Based on the calculated bearing capacity after structural correction and considering the overall need for correction, the pile locations and number of piles are determined. In areas with large correction amounts, piles are arranged as densely as possible; in areas with small correction amounts, the number of piles can be appropriately reduced. In areas where correction is not required but settlement control is necessary, piles are sealed in advance.
[0028] See Figures 2-3 S2 manufactures a high-pressure water pipe 3 and a first high-pressure air pipe 4. Both pipes are vertically inserted into each pile hole 2 to flush with air and water, so as to form a primary collapse zone 6, so that the raft slab 1 at the corresponding position settles.
[0029] It should be noted that the high-pressure water pipe 3 and the first high-pressure air pipe 4 are inserted vertically, meaning that the ends of the two pipes are basically vertical relative to the raft slab 1. The high-pressure water pipe 3 sprays water into the ground, which serves two purposes: firstly, to flush the soil at the bottom of the pit, and secondly, to promote the overflow of groundwater carrying silt along the pile driving hole 2, thus achieving soil removal; the first high-pressure air pipe 4 sprays air into the ground to stir the mud and flush the pit wall. The high-pressure water pipe 3 and the first high-pressure air pipe 4 work together to form a primary collapse zone 6 below the position to be corrected. The primary collapse zone 6 is U-shaped. At this time, after the foundation soil at the bottom of the raft slab 1 loosens and separates, the raft slab 1 can be forced to settle.
[0030] Preferably, in order to facilitate water and gas transportation, the front ends of the high-pressure water pipe 3 and the first high-pressure gas pipe 4 are bent and extended laterally, or connected to a horizontal pipe, and the corresponding ends are respectively connected to the high-pressure water pump and the air compressor.
[0031] See Figures 4-5 S3 manufactures a second high-pressure air pipe 5, the bottom of the second high-pressure air pipe 5 is bent to form a horizontal extension end, and inserted into each primary collapse zone 6 to perform horizontal air flushing, in conjunction with high-pressure water pipe 3 flushing water, so that adjacent primary collapse zones 6 are horizontally connected to form the final collapse zone 7, so as to accelerate the settlement of the raft 1 at the corresponding position.
[0032] It should be noted that the second high-pressure air pipe 5, through its bent end, scours the sidewalls of the collapse zone. On the one hand, this causes the groundwater to oscillate rapidly, continuously scouring the foundation soil in a tidal manner, thus expanding the collapse zone. On the other hand, numerous tiny high-pressure air bubbles irregularly penetrate the gaps in the foundation soil at a distance, forming minute permeable channels in a larger area of the foundation soil. After repeated horizontal impacts on all the pile holes 2, the water level between adjacent pile holes 2 is gradually connected, that is, the adjacent primary collapse zones 6 are horizontally connected (either completely connected or forming multiple connecting waterways), forming the final collapse zone 7.
[0033] At this time, the high-pressure water pipe 3 will cause the water level of each pile hole 2 to rise and fall in a larger range, thereby forming a horizontal through water flow underground, continuously impacting and loosening the remaining foundation soil between the pile holes, further promoting the settlement of the foundation, and realizing the building correction.
[0034] It should be noted that the time required for water jet correction varies depending on the required correction amount, as the area is divided into zones. The magnitude of the correction amount is mainly determined by the duration of the water jet aeration oscillation.
[0035] The horizontal connection achieved through the second high-pressure gas pipe 5 is to maximize the extent of loosened foundation soil. The high-pressure gas causes groundwater to oscillate back and forth within the horizontal channel, carrying away fine soil particles and accelerating the settlement process.
[0036] See Figure 6 After the settlement correction is in place, pile foundation construction will be carried out in S4 to enhance the stability of the raft slab 1 after the correction.
[0037] In one implementation, S4 is followed by: See Figure 7 S5 pile hole 2 is backfilled with 9 stones to fill the voids around the pile, i.e., backfill the collapse zone, to ensure the stability of the foundation.
[0038] See Figure 8 S6 pours concrete 10 to seal the hole, realizing the integration of the reinforcement pile 8 and the raft slab 1.
[0039] In one embodiment, the diameter of the pile hole 2 is 300-600mm, such as 300mm, 400mm, 450mm, 500mm, 600mm, etc., selected according to the actual reinforcement requirements of the raft foundation 1.
[0040] For the selection of the diameter of the pile driving hole 2, for pile driving in general buildings, the hole diameter is generally no more than 600mm, and at the same time, it should be controlled to be no less than 300mm, so as to allow for the simultaneous insertion of two pipes, especially the second high-pressure air pipe 5.
[0041] It should be noted that the pile driving hole 2 can also be a square hole. In this case, the diameter refers to the length of its diagonal.
[0042] In one implementation, the depth of the primary collapse zone 6 is no greater than 1 / 2 the length of a single pile.
[0043] It should be noted that the length of the subsequent processed piles is usually limited by the indoor net height, and the length is generally 2m per section. In order to ensure that the pile joint has a certain soil cover depth, the depth of the collapse zone does not exceed 1m (i.e., half the pile length).
[0044] The formation process of the final collapse zone 7 is mainly horizontal connection, with little increase in depth. Therefore, it is sufficient to ensure that the depth of the primary collapse zone 6 is no greater than 1 / 2 the length of a single pile.
[0045] In one embodiment, both the primary collapse zone 6 and the final collapse zone 7 ensure that the internal water level is such that the outlet ends of the corresponding first high-pressure air pipe 4 and second high-pressure air pipe 5 are submerged, thereby achieving optimal disturbance and oscillation of the water (mud) in the collapse zone, forming a state similar to boiling, rapidly loosening the foundation soil, and rapidly overflowing the raft slab 1, thus accelerating settlement correction.
[0046] It should be noted that the main function of the high-pressure gas is to agitate and churn the water in the collapse zone. During the process, water continuously leaps out of the raft 1; if the water level is too low, the high-pressure gas will escape directly and will not be able to agitate the water. Therefore, water needs to be added according to the actual situation to ensure that the high-pressure gas has sufficient water depth.
[0047] In other words, the high-pressure water pipe 3 mainly plays a role in promoting the formation of the primary collapse zone 6, and mainly plays a role in replenishing water to ensure sufficient water depth during the formation of the final collapse zone 7.
[0048] Preferably, the water level in the primary collapse zone 6 is not lower than half its depth, thereby ensuring the formation of the primary collapse zone 6.
[0049] In one embodiment, the high-pressure water pipe 3, the first high-pressure air pipe 4, and the second high-pressure air pipe 5 are all rigid pipes to ensure the directional output of high-pressure water and high-pressure air, and to ensure the formation of the collapse zone.
[0050] In one embodiment, the high-pressure water pipe 3 and the first high-pressure air pipe 4 / second high-pressure air pipe 5 are located at the two ends furthest apart on the cross section of the pile hole 2. For example, when the pile hole 2 is a square hole, they are located at the two ends of the diagonal, and when the pile hole 2 is a circular hole, they are located at the two ends of the diameter, so as to reduce the mutual influence between the two and enable the water jetting and air jetting to work together to form a collapse zone.
[0051] In one implementation, during the formation of the primary collapse zone 6 and the final collapse zone 7, the extruded slag and mud are cleaned up. For example, the overflowing mud can be treated in a sedimentation tank before being discharged.
[0052] In one embodiment, the second high-pressure air pipe 5 in S3 is used to uniformly purge air around the pile hole 2.
[0053] In one embodiment, the first high-pressure air pipe 4 and the second high-pressure air pipe 5 use the same air compressor with an air pressure of 0.2-0.5MPa, which can meet the air filling requirements and has low cost.
[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A building deviation correction method based on substrate water jetting, characterized in that, include: S1 has multiple pile driving holes spaced 2-3m apart on the building raft slab; S2 manufactures a high-pressure water pipe and a first high-pressure air pipe. Both pipes are vertically inserted into each pile hole to flush with air and water, so as to form a primary collapse zone and cause the raft slab at the corresponding position to settle. S3 manufactures a second high-pressure air pipe. The bottom of the second high-pressure air pipe is bent to form a horizontal extension end, which is inserted into each primary collapse zone to perform horizontal air flushing. Combined with high-pressure water flushing, the adjacent primary collapse zones are horizontally connected to form the final collapse zone, thereby accelerating the settlement of the raft slab at the corresponding location. After the settlement correction is in place, pile foundation construction will proceed in S4.
2. The building correction method based on substrate water jetting according to claim 1, characterized in that, S4 is followed by: S5 pile driving holes are backfilled with stones to fill the gaps around the pile. S6 is used to pour concrete to seal the hole.
3. The building correction method based on substrate water jetting according to claim 1, characterized in that, The diameter of the pile driving hole is 300-600mm.
4. The building correction method based on substrate water jetting according to claim 1, characterized in that, The depth of the primary collapse zone shall not exceed 1 / 2 the length of a single pile.
5. The building correction method based on substrate water jetting according to claim 1, characterized in that, The high-pressure water pipe, the first high-pressure air pipe, and the second high-pressure air pipe are all rigid pipes.
6. The building correction method based on substrate water jetting according to claim 1, characterized in that, The high-pressure water pipe and the first high-pressure air pipe / second high-pressure air pipe are located at the two ends furthest apart on the cross-section of the pile hole.
7. The building correction method based on substrate water jetting according to claim 1, characterized in that, During the formation of the primary and final collapse zones, the excavated slag and mud are cleaned up.
8. The building correction method based on substrate water jetting according to claim 1, characterized in that, In S3, the second high-pressure air pipe evenly pumps air around the circumference of the pile hole.
9. The building deviation correction method based on substrate water jetting according to claim 1, characterized in that, Both the primary collapse zone and the final collapse zone ensure that the internal water level is such that the outlet ends of the corresponding first high-pressure gas pipe and second high-pressure gas pipe are submerged.