CN115288183B - Device and method for keeping settlement of newly-added anchor pile foundation and original foundation of existing building consistent - Google Patents
Device and method for keeping settlement of newly-added anchor pile foundation and original foundation of existing building consistent Download PDFInfo
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- CN115288183B CN115288183B CN202210947018.7A CN202210947018A CN115288183B CN 115288183 B CN115288183 B CN 115288183B CN 202210947018 A CN202210947018 A CN 202210947018A CN 115288183 B CN115288183 B CN 115288183B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 100
- 239000010959 steel Substances 0.000 claims abstract description 100
- 238000012806 monitoring device Methods 0.000 claims abstract description 71
- 238000006073 displacement reaction Methods 0.000 claims abstract description 64
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000010276 construction Methods 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 claims description 10
- OIGNJSKKLXVSLS-VWUMJDOOSA-N prednisolone Chemical compound O=C1C=C[C@]2(C)[C@H]3[C@@H](O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 OIGNJSKKLXVSLS-VWUMJDOOSA-N 0.000 claims description 6
- 238000010223 real-time analysis Methods 0.000 claims description 5
- 108700041286 delta Proteins 0.000 claims description 2
- 238000009424 underpinning Methods 0.000 claims 5
- 230000002787 reinforcement Effects 0.000 description 17
- 230000008859 change Effects 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- 230000008901 benefit Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/48—Foundations inserted underneath existing buildings or constructions
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/34—Foundations for sinking or earthquake territories
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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Abstract
The invention discloses a device and a method for keeping the settlement of a newly-added anchor pile foundation and an existing building original foundation consistent. The bottom of the newly added steel column is connected with the newly added anchor pile foundation through an embedded part. The automatic loading system automatically loads the newly added anchor rod piles through the oil pump, and the permanent pile sealing is performed through the prestress pile sealing device after the automatic loading system works. The wall vertical displacement monitoring device, the newly-increased steel column vertical displacement monitoring device and the newly-increased steel column strain monitoring device are all connected with an automatic loading system, an oil pump is connected with a jack, and the automatic loading system adjusts the loading force value of the newly-increased anchor pile through the oil pump so that the settlement of the newly-increased anchor pile foundation and the original foundation of the existing building are kept consistent.
Description
Technical Field
The invention relates to a device and a method for keeping the settlement of a newly added anchor pile foundation consistent with that of an existing building foundation, belongs to the technical field of existing building foundation reinforcement, and can be widely applied to various existing building foundation reinforcement projects.
Background
With the development of large-scale engineering construction in China and the demand of old house reconstruction, a large number of existing buildings need to be reinforced to meet the requirements of bearing capacity, normal use, durability and the like. In the existing building reconstruction and reinforcement process, along with the change of using functions, space requirements, upper structure loads and the like, the upper structure and foundation form are changed, and the foundation is required to adopt corresponding reinforcement treatment measures to improve the bearing capacity so as to meet the requirement of safe use.
The anchor pile is a foundation reinforcement method commonly used in the foundation reinforcement engineering at present, but in the foundation reinforcement process of the existing building by adopting the anchor pile, the original foundation bears the original structural load of the upper part to be a constant value, the newly added anchor pile foundation bears the continuously increased upper structural load in the construction process, so that the newly added anchor pile foundation is subjected to larger settlement, larger settlement difference is generated between the newly added anchor pile foundation and the original foundation, the safety problems such as cracks, inclination, structural damage and the like of the house are easily caused, the bearing capacity, normal use and durability of the house are seriously influenced, and therefore, the corresponding technical scheme is required to be designed to solve the existing problems.
Disclosure of Invention
Aiming at the problems, the invention provides a device and a method for keeping the settlement of the newly added anchor pile foundation consistent with that of the original foundation of the existing building, which can ensure that the elevation of the anchor pile foundation is kept unchanged in the house reconstruction and reinforcement process, the newly added anchor pile foundation and the original foundation of the existing building do not generate settlement difference, and the safety problems of cracks, inclination, structural damage and the like of the existing building caused by uneven settlement are solved.
In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:
the device for keeping the settlement of the newly-added anchor pile foundation and the original foundation of the existing building consistent comprises a newly-added anchor pile, an automatic loading system and an oil pump, wherein the automatic loading system and the oil pump are connected, the device further comprises a wall vertical displacement monitoring device arranged on the original wall of the existing building, a gap between the original wall and the newly-added cup mouth foundation, a newly-added steel column vertical displacement monitoring device arranged on the newly-added steel column and a newly-added steel column strain monitoring device are arranged on the newly-added steel column, the bottom of the newly-added steel column is connected with the newly-added anchor pile foundation through an embedded part, the automatic loading system carries out automatic loading construction on the newly-added anchor pile through the oil pump, the newly-added anchor pile is permanently sealed through a prestress pile sealing device after the automatic loading system is finished, the wall vertical displacement monitoring device, the newly-added steel column vertical displacement monitoring device and the newly-added steel column strain monitoring device are connected with the automatic loading system, and the oil pump is connected with a jack, and the automatic loading system adjusts the loading force value of the newly-added anchor pile foundation through the oil pump so that the settlement of the newly-added anchor pile foundation and the existing building is kept consistent.
Preferably, the jack is a self-locking jack.
Preferably, with newly-increased steel column as the center, be provided with two newly-increased stock piles, two self-locking jack and two prestressing force pile sealing devices symmetrically, prestressing force pile sealing device sets up at self-locking jack top, newly-increased stock pile sets up in self-locking jack bottom.
Preferably, the bottoms of the original wall body and the newly-increased steel column are provided with newly-increased cup rim foundations.
Preferably, the newly-increased steel column is connected with the newly-increased cup rim foundation through a connecting pin.
Preferably, the original wall body is one of a bearing wall, a shear wall, a frame column or a filling wall.
The method for keeping the settlement of the newly added anchor pile foundation and the original foundation of the existing building consistent comprises the following steps:
step 1, determining a support and change area of an original wall body according to the bottom elevation, the width and the height of a newly-added anchor pile foundation, wherein the height of the support and change area is from the upper edge of the newly-added cup rim foundation to the lower edge of the newly-added anchor pile foundation, the length of the support and change area is the width of the newly-added anchor pile foundation along the direction of the original wall body, a gap between the original wall body and the newly-added cup rim foundation is reserved between the original wall body and the newly-added cup rim foundation, and unloading and support and change are carried out on the support and change area;
step 2, performing construction of a newly-added anchor pile foundation and a newly-added cup rim foundation, reliably connecting the newly-added steel column with the newly-added anchor pile foundation through an embedded part, and reliably connecting the newly-added steel column with the newly-added cup rim foundation through a connecting pin;
step 3, arranging a wall body vertical displacement monitoring device on an original wall body, arranging a newly-added steel column vertical displacement monitoring device and a newly-added steel column strain monitoring device on the newly-added steel column, and connecting the wall body vertical displacement monitoring device, the newly-added steel column vertical displacement monitoring device and the newly-added steel column strain monitoring device with an automatic loading system;
step 4, connecting the self-locking jack with an oil pump, connecting the oil pump with an automatic loading system, inputting real-time monitoring data of a wall vertical displacement monitoring device, a newly-added steel column vertical displacement monitoring device and a newly-added steel column strain monitoring device into the automatic loading system for real-time analysis, determining a loading force value of the oil pump, sending an instruction to the oil pump for loading, and automatically adjusting the loading force value of the newly-added anchor pile in real time by the automatic loading system through the oil pump to keep the basic elevation of the newly-added anchor pile unchanged;
and 5, permanently sealing the newly-added anchor rod piles after the automatic loading system is operated.
Preferably, with newly-increased steel column as the center, be provided with two newly-increased stock piles, two self-locking jack and two prestressing force pile sealing device symmetrically, two self-locking jack all are connected with the oil pump, and automatic loading system adjusts the pile pressing of newly-increased stock pile through the oil pump and makes newly-increased stock pile foundation and the original foundation subsidence of existing building keep unanimous.
Preferably, the automated loading system works as follows: according to the wall vertical displacement delta measured by the wall vertical displacement monitoring device 1 And the vertical displacement delta of the steel column measured by the newly added steel column vertical displacement monitoring device 2 Real-time monitoring data of the strain epsilon of the newly-increased steel column, the elastic modulus E of the newly-increased steel column and the section area A of the newly-increased steel column, which are measured by the strain monitoring device of the newly-increased steel column, and calculating parameters delta=delta 1 -Δ 2 The delta 1 in the formula is a constant value 0, if not, the automatic loading system sends out an early warning signal, and the reasons need to be checked and the early warning is eliminated; when delta is more than or equal to 0 and less than or equal to 1mm, the automatic loading system is not started; when delta>When the load is 1mm, the automatic loading system is automatically started, and at the moment, the load increment delta F=epsilon×E×A of the newly-added steel column, and the loading force value of each self-locking jack is delta F/2; the oil pump loads according to the loading force value, and the oil pump in the automatic loading system is automatically closed when the delta is restored to the value of 0.
The beneficial effects of the invention are as follows:
the device for keeping the settlement of the newly-added anchor pile foundation and the original foundation of the existing building consistent can ensure that the elevation of the newly-added anchor pile foundation is kept unchanged (namely, the settlement of the newly-added anchor pile foundation and the original foundation of the existing building is kept consistent) in the reconstruction and reinforcement construction process of the existing building, so that the uneven settlement of the new foundation and the old foundation is avoided, and the safety problems of cracks, inclination, structural damage and the like caused by the inconsistent settlement of the new foundation and the old foundation in the reconstruction and reinforcement process of the existing building are solved. The method is simple in construction, easy to operate, safe, reliable, easy to guarantee engineering quality, high in economic benefit and capable of being widely applied to foundation reinforcement engineering of various existing buildings.
Drawings
FIG. 1 is a schematic diagram of reinforcement of a device for keeping settlement of a newly added anchor pile foundation consistent with that of an original foundation of an existing building;
the reference numerals have the following meanings:
1: a wall vertical displacement monitoring device; 2: a gap between the original wall body and the newly-added cup mouth foundation; 3: a device for monitoring the vertical displacement of the newly added steel column; 4: newly added steel column strain monitoring devices; 5: an original wall body; 6: newly added steel columns; 7: connecting the peg; 8: newly adding a cup mouth foundation; 9: an embedded part; 10: a prestress pile sealing device; 11: self-locking jack; 12: newly adding an anchor pile foundation; 13: newly adding an anchor pile; 14: an original wall foundation; 15: an automated loading system; 16: an oil pump.
Detailed Description
The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific examples, so that those skilled in the art can better understand the present invention and implement it, but the examples are not limited thereto.
As shown in fig. 1, the existing building is a six-layer brick-concrete structure, the existing building original foundation is an original wall foundation 14, and the house is reformed and reinforced into a steel frame-center support structure (an inner steel frame+an outer original wall) due to the change of the use functions and space requirements of the existing building.
The device for keeping the settlement of the newly added anchor pile foundation and the original foundation of the existing building consistent comprises a newly added anchor pile 13, an automatic loading system 15 and an oil pump 16 which are connected with each other, and further comprises a wall body vertical displacement monitoring device 1 arranged on the original wall body 5 of the existing building, a gap 2 between the original wall body and the newly added cup mouth foundation, a newly added steel column vertical displacement monitoring device 3 arranged on the newly added steel column 6 and a newly added steel column strain monitoring device 4. In the figure, the wall vertical displacement monitoring device 1 and the newly-added steel column vertical displacement monitoring device 3 are arranged at the same device with the same height.
The bottom of the newly-increased steel column 6 is connected with a newly-increased anchor pile foundation 12 through an embedded part 9, the bottoms of the original wall 5 and the newly-increased steel column 6 are provided with a newly-increased cup mouth foundation 8, and the newly-increased steel column 6 is connected with the newly-increased cup mouth foundation 8 through a connecting bolt 7.
The self-locking jack 11 is connected to an oil pump 16, and the oil pump 16 is connected to an automatic loading system 15. The real-time monitoring data of the wall body vertical displacement monitoring device 1, the newly-added steel column vertical displacement monitoring device 3 and the newly-added steel column strain monitoring device 4 are input into an automatic loading system 15 for real-time analysis, the loading force value of the oil pump 16 is determined, and an instruction is sent to the oil pump 16 for loading. The working process of the automatic loading system is as follows: according to the wall vertical displacement delta measured by the wall vertical displacement monitoring device 1 1 And the vertical displacement delta of the steel column measured by the newly added steel column vertical displacement monitoring device 3 2 The parameter delta=delta can be calculated by the real-time monitoring data of the strain epsilon of the newly-increased steel column, the elastic modulus E of the newly-increased steel column 6 and the cross-sectional area A of the newly-increased steel column 6, which are measured by the strain monitoring device 4 of the newly-increased steel column (the displacement is downwards negative) 1 -Δ 2 Delta in the formula 1 If the value is not 0, the automatic loading system sends out an early warning signal, and the reasons need to be checked and the early warning needs to be eliminated. When delta is more than or equal to 0 and less than or equal to 1mm, the automatic loading system 15 is not started; when delta>When 1mm, the automatic loading system 15 is automatically started, at this time, the load increment Δf=ε×e×a of the newly added steel column, the loading force value of each self-locking jack 11 is Δf/2, the oil pump 16 performs loading according to the loading force value, and when Δis restored to 0 value, the oil pump 16 is automatically closed. The automatic loading system 15 automatically adjusts the loading force value of the newly increased anchor pile 13 in real time through the oil pump 16, and keeps the elevation of the newly increased anchor pile foundation 12 unchanged, namely delta=0.
In the reconstruction and reinforcement construction process of an upper structure (such as a newly-added steel column 6), the strain and vertical displacement change condition of an upper component are mastered in real time by using the wall body vertical displacement monitoring device 1, the newly-added steel column vertical displacement monitoring device 3 and the newly-added steel column strain monitoring device 4. Along with the progress of superstructure transformation reinforcement construction, the load constantly increases, and wall body vertical displacement monitoring devices 1, newly-increased steel column vertical displacement monitoring devices 3 and newly-increased steel column strain monitoring devices 4 are with wall body vertical displacement, the vertical displacement of newly-increased steel column and strain monitoring real-time data input to automatic loading system 15 carries out real-time analysis. And outputting a loading force value of the anchor rod pile according to a calculation and analysis result of the automatic loading system 15, and automatically adjusting the loading force value of the newly increased anchor rod pile in real time through the oil pump 16 to ensure that the elevation of the foundation of the newly increased anchor rod pile is kept unchanged until the upper structure is transformed and reinforced, and then permanently sealing the anchor rod pile 13.
The original wall 5 can be one of a bearing wall, a shear wall, a frame column or a filling wall. Preferably, the jack is a self-locking jack 11, and an oil inlet pipe and an oil return pipe of the self-locking jack 11 are controlled through an oil pump 16 so as to realize pressurization lifting and pressure relief return of the self-locking jack 11.
In order to improve the control accuracy, two newly-increased anchor piles 13, two self-locking jacks 11 and two prestress pile sealing devices 10 are symmetrically arranged with the newly-increased steel columns 6 as the centers, the prestress pile sealing devices 10 are arranged at the tops of the self-locking jacks 11, and the newly-increased anchor piles 13 are arranged at the bottoms of the self-locking jacks 11. The two sets of symmetrically arranged devices realize synchronous control and synchronous action.
Correspondingly, a method for keeping the settlement of the newly added anchor pile foundation consistent with that of the original foundation of the existing building is taken as an example shown in fig. 1, wherein the existing building is of a six-layer brick-concrete structure, and the house is reformed and reinforced into a steel frame-center supporting structure (an inner steel frame and an outer original wall) due to the change of the use function and the space requirement of the existing building, and the working process is described by taking the construction of the original wall 5 as an example and comprises the following steps:
step 1, determining a support and change area of an original wall body 5 according to the bottom elevation, width and height of a newly-added anchor pile foundation 12, wherein the height of the support and change area is from the upper edge of a newly-added cup mouth foundation 8 to the lower edge of the newly-added anchor pile foundation 12, the length of the support and change area is the width of the newly-added anchor pile foundation 12 along the direction of the original wall body 5, a gap 2 between the original wall body 5 and the newly-added cup mouth foundation 8 is reserved between the original wall body 5 and the newly-added cup mouth foundation, and unloading and support and change are carried out on the support and change area;
step 2, performing construction of a newly-increased anchor pile foundation 12 and a newly-increased cup rim foundation 8, reliably connecting the newly-increased steel column 6 with the newly-increased anchor pile foundation 12 through an embedded part 9, and reliably connecting the newly-increased steel column 6 with the newly-increased cup rim foundation 8 through a connecting stud 7;
step 3, arranging the wall body vertical displacement monitoring device 1 on an original wall body 5, arranging the newly-added steel column vertical displacement monitoring device 3 and the newly-added steel column strain monitoring device 4 on the newly-added steel column 6, and connecting the wall body vertical displacement monitoring device 1, the newly-added steel column vertical displacement monitoring device 3 and the newly-added steel column strain monitoring device 4 with an automatic loading system 15;
and 4, connecting the self-locking jack 11 with an oil pump 16, and connecting the oil pump 16 with an automatic loading system 15. The real-time monitoring data of the wall body vertical displacement monitoring device 1, the newly-added steel column vertical displacement monitoring device 3 and the newly-added steel column strain monitoring device 4 are input into an automatic loading system 15 for real-time analysis, the loading force value of the oil pump 16 is determined, and an instruction is sent to the oil pump 16 for loading. The working process of the automatic loading system is as follows: according to the wall vertical displacement delta measured by the wall vertical displacement monitoring device 1 1 And the vertical displacement delta of the steel column measured by the newly added steel column vertical displacement monitoring device 3 2 (displacement is negative downwards), real-time monitoring data of the strain epsilon of the newly-increased steel column measured by the strain monitoring device 4 of the newly-increased steel column, the elastic modulus E of the newly-increased steel column 6 and the sectional area A of the newly-increased steel column, and calculating to obtain a parameter delta=delta 1 -Δ 2 Delta in the formula 1 If the value is not 0, the automatic loading system sends out an early warning signal, and the reasons need to be checked and the early warning needs to be eliminated. When delta is more than or equal to 0 and less than or equal to 1mm, the automatic loading system 15 is not started; when delta>When 1mm is reached, the automatic loading system 15 is automatically started, and at the moment, the load increment delta F=epsilon×E×A of the newly added steel column, and the loading force value of each self-locking jack 11 is delta F/2; the oil pump 16 performs loading according to the loading force value, and the oil pump 16 in the automatic loading system 15 is automatically turned off when Δ is restored to the 0 value. The automatic loading system 15 automatically adjusts the loading force value of the newly increased anchor pile 13 in real time through the oil pump 16, and keeps the elevation of the newly increased anchor pile foundation 12 unchanged, namely delta=0;
and 5, permanently sealing the newly added anchor rod piles 13 after the automatic loading system is operated.
In order to improve the control accuracy, preferably, with the newly-increased steel column 6 as the center, two newly-increased anchor pile 13, two self-locking jacks 11 and two prestress pile sealing devices 10 are symmetrically arranged, the two self-locking jacks 11 are connected with an oil pump 16, and an automatic loading system 15 adjusts the loading force value of the newly-increased anchor pile 13 through the oil pump 16 so that the settlement of the newly-increased anchor pile foundation 12 is consistent with that of the original foundation of the existing building.
The device for keeping the settlement of the newly-added anchor pile foundation and the original foundation of the existing building consistent can ensure that the elevation of the newly-added anchor pile foundation is kept unchanged (namely, the settlement of the newly-added anchor pile foundation and the original foundation of the existing building is kept consistent) in the reconstruction and reinforcement construction process of the existing building, so that the uneven settlement of the new foundation and the old foundation is avoided, and the safety problems of cracks, inclination, structural damage and the like caused by the inconsistent settlement of the new foundation and the old foundation in the reconstruction and reinforcement process of the existing building are solved. The method is simple in construction, easy to operate, safe, reliable, easy to guarantee engineering quality, high in economic benefit and capable of being widely applied to foundation reinforcement engineering of various existing buildings.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures disclosed herein or modifications in equivalent processes, or any application, directly or indirectly, within the scope of the invention.
Claims (2)
1. The method for keeping the settlement of the newly added anchor pile foundation and the original foundation of the existing building consistent is characterized by comprising the following steps:
the construction is carried out by adopting a device for keeping the settlement of the newly-added anchor pile foundation consistent with that of the original foundation of the existing building, the device for keeping the settlement of the newly-added anchor pile foundation consistent with that of the original foundation of the existing building comprises a newly-added anchor pile (13), an automatic loading system (15) and an oil pump (16) which are connected with each other, the device also comprises a wall vertical displacement monitoring device (1) arranged on the original wall (5) of the existing building, a gap (2) between the original wall and the newly-added cup foundation, a newly-added steel column vertical displacement monitoring device (3) and a newly-added steel column strain monitoring device (4) which are arranged on the newly-added steel column (6), the bottom of the newly-added steel column (6) is connected with the newly-added anchor pile foundation (12) through an embedded part (9), the automatic loading system (15) carries out automatic loading construction on the newly-added anchor pile (13) through an oil pump (16), the newly-added anchor pile (13) is permanently sealed through a prestress pile sealing device (10) after the automatic loading system (15) is finished, the vertical displacement monitoring device (1), the newly-added anchor pile vertical displacement monitoring device (3) and the newly-added anchor pile strain monitoring device (4) are connected with the newly-added anchor pile (15) through the automatic loading system (16), the automatic loading system (15) adjusts the loading force value of the newly added anchor pile (13) through an oil pump (16) so that the settlement of the newly added anchor pile foundation (12) is consistent with that of the original foundation of the existing building;
the method for keeping the settlement of the newly added anchor pile foundation consistent with that of the original foundation of the existing building comprises the following steps:
step 1, determining a underpinning area of an original wall body (5) according to the bottom elevation, the width and the height of a newly-added anchor pile foundation (12), wherein the height of the underpinning area is from the upper edge of a newly-added cup mouth foundation (8) to the lower edge of the newly-added anchor pile foundation (12), the length of the underpinning area is the width of the newly-added anchor pile foundation (12) along the original wall body (5), a gap (2) between the original wall body (5) and the newly-added cup mouth foundation (8) is reserved between the original wall body and the newly-added cup mouth foundation, and unloading and underpinning the underpinning area;
step 2, performing construction of a newly-added anchor pile foundation (12) and a newly-added cup rim foundation (8), reliably connecting a newly-added steel column (6) with the newly-added anchor pile foundation (12) through an embedded part (9), and reliably connecting the newly-added steel column (6) with the newly-added cup rim foundation (8) through a connecting stud (7);
step 3, arranging a wall body vertical displacement monitoring device (1) on an original wall body (5), arranging a newly-added steel column vertical displacement monitoring device (3) and a newly-added steel column strain monitoring device (4) on a newly-added steel column (6), and connecting the wall body vertical displacement monitoring device (1), the newly-added steel column vertical displacement monitoring device (3) and the newly-added steel column strain monitoring device (4) with an automatic loading system (15);
step 4, connecting the self-locking jack (11) with an oil pump (16), connecting the oil pump (16) with an automatic loading system (15), inputting real-time monitoring data of a wall vertical displacement monitoring device (1), a newly added steel column vertical displacement monitoring device (3) and a newly added steel column strain monitoring device (4) to the automatic loading system (15) for real-time analysis, determining a loading force value of the oil pump (16), sending an instruction to the oil pump (16) for loading, and automatically adjusting the loading force value of the newly added anchor pile (13) in real time by the automatic loading system (15) through the oil pump (16), so as to keep the elevation of the newly added anchor pile foundation (12) unchanged;
step 5, permanently sealing piles of the newly added anchor piles (13) after the automatic loading system works; the automatic loading system (15) works as follows: according to the wall vertical displacement delta measured by the wall vertical displacement monitoring device (1) 1 And the vertical displacement delta of the steel column measured by the newly added steel column vertical displacement monitoring device (3) 2 Real-time monitoring data of the strain epsilon of the newly-increased steel column measured by the strain monitoring device (4) of the newly-increased steel column, the elastic modulus E of the newly-increased steel column (6) and the cross-sectional area A of the newly-increased steel column are calculated to obtain a parameter delta=delta 1 -Δ 2 The delta 1 in the formula is a constant value 0, if not, the automatic loading system sends out an early warning signal, and the reasons need to be checked and the early warning is eliminated; when delta is more than or equal to 0 and less than or equal to 1mm, the automatic loading system (15) is not started; when delta>When the load is 1mm, the automatic loading system (15) is automatically started, and at the moment, the load increment delta F=epsilon E A of the newly added steel column, and the loading force value of each self-locking jack (11) is delta F/2; the oil pump (16) loads according to the loading force value, and when the delta is restored to the 0 value, the oil pump (16) in the automatic loading system (15) is automatically closed, wherein the steel column vertical displacement delta measured by the steel column vertical displacement monitoring device (3) is additionally arranged 2 The displacement is negative downwards.
2. The method for keeping the settlement of the newly-added anchor pile foundation consistent with the settlement of the original foundation of the existing building according to claim 1, wherein two newly-added anchor piles (13), two self-locking jacks (11) and two prestress pile sealing devices (10) are symmetrically arranged by taking the newly-added steel column (6) as a center, the two self-locking jacks (11) are connected with an oil pump (16), and an automatic loading system (15) adjusts the pile pressing of the newly-added anchor piles (13) through the oil pump (16) so that the settlement of the newly-added anchor pile foundation (12) is kept consistent with the settlement of the original foundation of the existing building.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210947018.7A CN115288183B (en) | 2022-08-09 | 2022-08-09 | Device and method for keeping settlement of newly-added anchor pile foundation and original foundation of existing building consistent |
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| CN202210947018.7A CN115288183B (en) | 2022-08-09 | 2022-08-09 | Device and method for keeping settlement of newly-added anchor pile foundation and original foundation of existing building consistent |
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| CN115288183B true CN115288183B (en) | 2023-11-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20110098257A (en) * | 2010-02-26 | 2011-09-01 | 삼성물산 주식회사 | Improved underpinning method using the micro pile |
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| CN114809713A (en) * | 2022-06-07 | 2022-07-29 | 江苏东南特种技术工程有限公司 | Real-time intelligent control method and system for inclination correction and reinforcement of high-rise building |
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| KR20110098257A (en) * | 2010-02-26 | 2011-09-01 | 삼성물산 주식회사 | Improved underpinning method using the micro pile |
| KR20180112907A (en) * | 2017-04-04 | 2018-10-15 | 산하토건(주) | Pre-loading apparatus and loading method for foundation-pile construction of apartment building remodeling |
| CN207846454U (en) * | 2017-12-12 | 2018-09-11 | 上海建工一建集团有限公司 | Overhanging type unilateral side wall mixed reinforcement and replacing structure |
| CN110939164A (en) * | 2019-11-29 | 2020-03-31 | 上海天演建筑物移位工程股份有限公司 | Preventive leveling active underpinning device and construction method |
| CN212835550U (en) * | 2020-07-07 | 2021-03-30 | 广东华科大建筑技术开发有限公司 | Frame construction jacking deviation correcting system |
| CN112761199A (en) * | 2021-01-20 | 2021-05-07 | 江苏东南特种技术工程有限公司 | Static pressure anchor rod pile and broken pile underpinning supporting device for high-rise deviation correction and monitoring method thereof |
| CN114809713A (en) * | 2022-06-07 | 2022-07-29 | 江苏东南特种技术工程有限公司 | Real-time intelligent control method and system for inclination correction and reinforcement of high-rise building |
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| CN115288183A (en) | 2022-11-04 |
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