CN117107826A - Earthquake-resistant structure and method for improving earthquake-resistant performance of building pile foundation in soft soil foundation - Google Patents

Earthquake-resistant structure and method for improving earthquake-resistant performance of building pile foundation in soft soil foundation Download PDF

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Publication number
CN117107826A
CN117107826A CN202310872295.0A CN202310872295A CN117107826A CN 117107826 A CN117107826 A CN 117107826A CN 202310872295 A CN202310872295 A CN 202310872295A CN 117107826 A CN117107826 A CN 117107826A
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CN
China
Prior art keywords
pile
foundation
building
earthquake
building pile
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Pending
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CN202310872295.0A
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Chinese (zh)
Inventor
张磊
郑育恒
沈健豪
许标
张盼盼
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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Priority to CN202310872295.0A priority Critical patent/CN117107826A/en
Publication of CN117107826A publication Critical patent/CN117107826A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/10—Deep foundations
    • E02D27/12—Pile foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/10—Deep foundations
    • E02D27/12—Pile foundations
    • E02D27/14—Pile framings, i.e. piles assembled to form the substructure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil

Abstract

The invention discloses an earthquake-resistant structure and method for improving earthquake resistance of building pile foundations in soft soil foundations, and belongs to the technical field of building pile foundations. The invention arranges the shallow protection piles at the periphery of the building pile foundation and between or under the bearing platform in various arrangement modes, which not only can improve the vertical bearing capacity of the whole building pile foundation, but also can share the soil dynamic load borne by the building pile foundation in the earthquake process, and can consume the fluctuation energy in the earthquake process by sacrificing itself (brittle fracture), thereby achieving the purpose of protecting the building pile foundation.

Description

Earthquake-resistant structure and method for improving earthquake-resistant performance of building pile foundation in soft soil foundation
Technical Field
The invention relates to the technical field of building pile foundations, in particular to an anti-seismic structure and method for improving anti-seismic performance of a building pile foundation in a soft soil foundation.
Background
A large range of deep and weak soil layers are distributed in coastal and coastal cities at home and abroad, and pile foundations are often adopted as main foundation types of ground buildings of the cities due to the characteristics of high compressibility, slow consolidation, low strength and the like of the weak soil. Numerous studies have shown that weak earth in seismic engineering is prone to seismic liquefaction and has a strong amplifying effect on seismic waves, so that pile foundations built therein are prone to bending damage. It can be seen that the improvement of the earthquake resistance of pile foundations in soft soil foundations is particularly critical.
In view of the above problems, in order to reduce or avoid the earthquake damage of the building pile foundation in the weak soil caused by the earthquake, certain vibration absorbing and isolating measures are necessary. Conventional seismic isolation measures are aimed at improving the seismic performance of the structure by applying a seismic isolation mount. The vibration isolation support is provided with a vibration isolation layer or a damper at a key position of the structure, and the purpose of reducing the dynamic response amplitude of the structure is achieved through the energy dissipation of the vibration isolation support in the earthquake process. However, the vibration isolation support is generally arranged between the upper structure or the upper structure and the foundation, the vibration isolation effect on the upper structure is obvious, and the method can greatly reduce the shearing force and the bending moment value of the components near the vibration isolation support under the action of an earthquake, but only can move down the position where the bending moment peak occurs, the contribution to reducing the bending moment peak is small, and the vibration isolation support is arranged between the upper structure and the foundation to a certain extent, so that the degree of freedom of the whole structure is increased. If the shock insulation support is arranged along the pile length direction, the problems can be avoided to a certain extent, but the scheme has higher manufacturing cost and difficult construction. The method for protecting the building pile foundation and improving the anti-seismic and shock-absorbing performances of the pile foundation by arranging the shallow protection piles can effectively overcome the limitations of the method.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide an earthquake-resistant structure and an earthquake-resistant method for improving the earthquake-resistant performance of a building pile foundation in a soft soil foundation. The method for protecting the building pile foundation and improving the anti-seismic and shock-absorbing performance of the pile foundation by arranging the shallow protection piles can effectively overcome the limitation of the method for adopting the shock-insulating support.
In order to solve the technical problems, the invention is realized by the following technical scheme:
an earthquake-resistant structure for improving earthquake-resistant performance of building pile foundations in soft soil foundations, the earthquake-resistant structure comprises a plurality of shallow protection piles arranged in the soft soil foundations, the shallow protection piles are arranged on the periphery of the building pile foundations and/or between the building pile foundations below bearing platforms, and the bearing platforms are arranged on the pile tops of the building pile foundations and are rigidly connected with the pile foundations.
The shallow layer protection pile is not limited to a certain pile, and various short piles, cement soil piles, cast-in-place piles, prefabricated pipe piles and the like can be selected according to actual engineering conditions; the building pile foundation comprises pile foundation types adopted by various buildings, and the shallow layer protection piles can be arranged in a denser mode according to the importance of protecting the building pile foundation.
Preferably, when the shallow protection piles are arranged between building pile foundations below the bearing platform, the shallow protection piles are not connected with the bearing platform.
Preferably, the pile length of the shallow layer protection pile is not less than 3 times of the pile diameter of the building pile foundation and not more than 6 times of the pile diameter of the building pile foundation.
Preferably, the horizontal distance between the shallow layer protection pile and the building pile foundation is 1-4 times of the pile diameter of the building pile foundation.
Preferably, when the strength of the soil body around the shallow protection pile is lower or there is a greater risk of deformation and sedimentation, the pile length of the shallow protection pile is not less than 1/4 of the pile length of the building pile foundation.
Preferably, when the pile top of the building pile foundation is not provided with a bearing platform, the pile length of the shallow layer protection pile is 1/3 of the pile length of the building pile foundation.
Preferably, the shallow protection piles are arranged at intervals or continuously to form a shallow protection pile wall when arranged at the periphery of the building pile foundation and the bearing platform.
Preferably, the arrangement form of the shallow protection piles adopts equidistant, square, rectangular grid, triangle and quincuncial shapes.
A method of improving the earthquake resistance of a building pile foundation in a weak soil foundation, comprising:
when the foundation of the existing building with limited space is reinforced, shallow protection piles are directly arranged in the soft soil foundation at the periphery of the building pile foundation, so that the protection of the existing building pile foundation is quickly formed.
Preferably, when the foundation of the newly built building is reinforced, the construction process flow is as follows: leveling a site, preparing construction, measuring and lofting, constructing shallow protection piles, constructing building pile foundations, arranging bearing platforms and rigidly connecting the connecting parts of the bottom of the bearing platforms and the tops of the pile foundations.
Preferably, when building pile foundations are constructed, rubber materials are mixed in the building pile foundations, so that uneven lattice type rubber particles can be formed on the surfaces of the building pile foundations.
The anti-seismic method can be used in a common building construction site, can also be used when the foundation of the existing building with limited space is reinforced, and the shallow layer protection piles are arranged around the building pile foundation to protect the building pile foundation, so that the bearing capacity of the whole building pile foundation can be improved, the soil body dynamic load born by the building pile foundation can be shared in the earthquake process, the fluctuation energy in the earthquake process can be consumed by sacrificing the self (brittle fracture), and the anti-seismic performance of the whole building pile foundation and the upper structure is improved.
Compared with the prior art, the invention has the following advantages:
1. adopts various protection piles and has wide application range
According to the method, different shallow protection piles can be adopted according to actual engineering requirements, targeted piles can be selected according to different geological conditions, pile forming quality controllability is high, and the problems of poor pile forming quality, misuse of pile forming and the like are avoided.
2. Shallow layer protection pile is adopted, and construction is convenient and fast
If the traditional vibration reduction and isolation measures of the vibration isolation support are applied to the lower part of the building pile foundation, the influence of lateral extrusion of soil mass on the building pile foundation in the earthquake process cannot be reduced; if the building pile foundation is arranged between the building pile foundation and the upper structure, the degree of freedom of the building pile foundation is inevitably improved, and the building pile foundation can possibly rotate around the shock insulation support under the action of an earthquake. Compared with the measure of applying the vibration isolation support to reduce and isolate the vibration, the shallow layer protection pile is arranged to have small disturbance to the surrounding environment in the construction process, the adjacent building is not easy to be affected in a harmful way, the construction technology is mature, and the construction is convenient.
3. Providing basis for realizing design economy
From the design point of view, the method of the shallow layer protection pile can effectively improve the earthquake resistance of the building pile foundation, avoid the problem of rapid increase of construction cost caused by large-scale soft soil foundation treatment and large-scale building pile foundation scale, and promote the comprehensive economy of the earthquake-resistant measures of the building pile foundation and the upper structure in the soft soil foundation.
4. Short construction period and low cost
The shallow layer protection pile is completed by only considering shallow layer treatment, and is longer than pile-forming deep foundation treatment, so that the construction period is effectively shortened, and the equipment maintenance and management cost is reduced.
Drawings
Fig. 1 is a schematic cross-sectional view of a pile foundation and a shallow protection pile according to embodiment 2 of the present invention.
Fig. 2 is a schematic plan layout structure of a building pile foundation and a shallow protection pile according to embodiment 2 of the present invention.
Fig. 3 is a schematic cross-sectional view of a pile foundation and a shallow protection pile according to embodiment 3 of the present invention.
Fig. 4 is a schematic plan layout structure of a pile foundation and a shallow protection pile in embodiment 3 of the present invention.
Fig. 5 is a schematic cross-sectional view of a pile foundation and a shallow protection pile according to embodiment 4 of the present invention.
Fig. 6 is a schematic plan layout structure of a pile foundation and a shallow protection pile in embodiment 4 of the present invention.
Fig. 7 is a basic numerical displacement calculation cloud of the reinforced pile-cap system.
Fig. 8 is a basic numerical displacement calculation cloud of an unreinforced pile-cap system.
FIG. 9 is a schematic view of a basic numerical calculation model of the reinforced pile-cap system.
Reference numerals: 1-shallow layer protection piles; 2-building pile foundation; 3-bearing platform; 4-soft soil foundation; 5-shallow layer protection pile wall.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
The invention discloses a method for improving the earthquake resistance of a building pile foundation, referring to fig. 1-6, the method comprises the following steps of structurally schematic diagrams of shallow protection piles and the building pile foundation in different arrangement modes, wherein the shallow protection piles 1, the building pile foundation 2, a bearing platform 3 and a soft soil foundation 4. As a specific embodiment of the invention, the method disclosed by the invention is adopted to improve the earthquake resistance of a building pile foundation.
In order to achieve the technical effects, the general idea of the invention is as follows:
example 1:
an anti-seismic structure for improving the anti-seismic performance of a building pile foundation in a soft soil foundation comprises a plurality of shallow layer protection piles 1 which are arranged in a soft soil foundation 4, wherein the shallow layer protection piles 1 are arranged between the periphery of the building pile foundation 2 and the building pile foundation 2 below a bearing platform 3, and the bearing platform 3 is arranged at the pile top of the building pile foundation 2 and is rigidly connected with the building pile foundation 2.
The shallow layer protection piles 1 arranged below the bearing platform 3 are not connected with the bearing platform 3, so that the construction complexity is reduced; the shallow layer protection pile 1 arranged below the pile cap 3 can provide certain support for the pile cap 3, and the vertical bearing capacity of a pile cap 3 system of the building pile foundation 2 is improved.
The pile length of the shallow layer protection pile 1 is not less than 3 times of the pile diameter of the building pile foundation 2 and not more than 6 times of the pile diameter of the building pile foundation 2, so that economical rationality of construction and earthquake resistance requirement of the building pile foundation 2 are guaranteed.
The horizontal spacing between the shallow protection pile 1 and the building pile foundation 2 is too small, so that the construction difficulty is increased, and the shock absorption performance of the shallow protection pile 1 is reduced too large, so that the horizontal spacing is 1-4 times of the pile diameter of the building pile foundation 2, and the shallow protection pile 1 can be continuously arranged for a pile periphery soil body with lower strength or the building pile foundation 2 bearing a larger upper load to form a shallow protection pile wall.
When the strength of soil around the shallow layer protection pile 1 is low or the risk of deformation and settlement exists, the pile length of the shallow layer protection pile 1 is not less than 1/4 of the pile length of the building pile foundation 2 so as to increase the friction force and bearing capacity of the shallow layer protection pile 1 and the soil.
When the pile top of the building pile foundation 2 is not provided with the bearing platform 3, engineering experience shows that the maximum bending moment section of the building pile foundation 2 is usually 1/3 of the pile length near the pile top in the earthquake process, so the pile length of the shallow layer protection pile 1 is 1/3 of the pile length of the building pile foundation 2, and the maximum bending moment of the building pile foundation 2 is reduced.
Example 2:
for the existing building foundation, especially when the existing building foundation with limited space is reinforced, large equipment cannot enter due to limited construction space, and the traditional reinforcing mode is not suitable for the special working condition, the embodiment provides a method for improving the earthquake resistance of a building pile foundation in a soft soil foundation, which comprises the following steps:
when the foundation of the existing building with limited space is reinforced, the shallow protection piles 1 are directly arranged in the soft soil foundation 4 at the periphery of the building pile foundation 2, so that the protection of the existing building pile foundation 2 is rapidly formed.
As shown in fig. 1 and 2, the shallow protection piles 1 disposed outside the pile cap 3 may be appropriately increased in pile length thereof to reduce adverse effects on adjacent buildings or pile foundations; the shallow layer protection piles 1 are arranged at the periphery of the building pile foundation 2 and the bearing platform 3 and are arranged in a square arrangement mode; the distance between the building pile foundation 2 and the shallow protection pile 1 is 2.5 times of the pile diameter of the building pile foundation 2; the diameter of the shallow layer protection pile 1 is 1 time of the diameter of the building pile foundation 2, and the pile length is 4.5 times of the diameter of the building pile foundation 2. The shallow layer protection pile 1 only needs light construction equipment during construction, has flexible pile position arrangement, high construction speed, strong adaptability to construction sites, small influence on environment, various construction advantages and suitability for the foundation reinforcement working condition of the existing building with limited space.
Example 3:
as shown in fig. 3 and 4, this embodiment differs from embodiment 3 in that: when the foundation of the existing building with limited space is reinforced, the shallow protection piles 1 are arranged on the periphery of the building pile foundation 2 and the bearing platform 3, and the shallow protection piles 1 are continuously arranged to form a shallow protection pile wall 5. If the soil body around the building pile foundation 2 is saturated sand, the shallow layer protection pile wall can also play a role in blocking the liquefaction process of the soil body, reduce the risks of foundation settlement and instability caused by liquefaction, reduce the influence of rising of the underground water level and keep the relative stable state of the soil body.
Example 4:
a method of improving the earthquake resistance of a building pile foundation in a weak soil foundation, comprising:
when the foundation of the newly built building is reinforced, the construction process flow is as follows: leveling a site, preparing construction, measuring and lofting, constructing a shallow layer protection pile 1, constructing a building pile foundation 2, arranging a bearing platform 3 and rigidly connecting the connecting part of the bottom of the bearing platform 3 and the top of the pile foundation. The construction pile foundation 2 and the arrangement and construction are performed after the arrangement of the shallow protection piles 1 to reduce the adverse effect of the construction on the construction pile foundation 2.
As shown in fig. 5 and 6, the shallow layer protection piles 1 are arranged between the periphery of the building pile foundation 2 and the building pile foundation 2 below the bearing platform 3 in an equidistant quincuncial arrangement mode; the distance between the building pile foundation 2 and the shallow protection pile 1 is 2 times of the pile diameter of the building pile foundation 2; the diameter of the shallow layer protection pile 1 is 1 time of the diameter of the building pile foundation 2, and the pile length is 4.5 times of the diameter of the building pile foundation 2.
When the building pile foundation 2 is constructed, rubber materials are mixed in the building pile foundation 2, so that uneven lattice type rubber particles can be formed on the surface of the building pile foundation 2, friction force between soil and the building pile foundation 2 can be increased, a part of earthquake wave energy can be reduced during an earthquake, the damping ratio can be increased, the fluctuation energy in the earthquake process is further consumed, and the building pile foundation 2 is further protected.
Example 5:
in order to verify the effectiveness of the invention in improving the earthquake resistance of the building pile foundation 2, a reinforced pile-cap 3 system foundation model (shown in figure 7) and an unreinforced pile-cap 3 system foundation model (not shown) are built through ABAQUS, and pile top displacement is calculated, wherein the calculation result shows that the pile top horizontal relative displacement of the reinforced pile-cap 3 system foundation model is 0.292m, the pile top horizontal relative displacement of the unreinforced pile-cap 3 system foundation model is 0.386m, and the pile top horizontal displacement of the reinforced pile-cap 3 system foundation can be reduced by 24.35% compared with the pile top horizontal displacement of the unreinforced pile-cap 3 system foundation. The calculated cloud of the pile-cap 3 system base numerical displacement is shown in figures 8 and 9 below.
According to finite element calculation, the building area is 92.16m 2 The method is characterized in that a layout mode of protecting a pile-bearing platform system by adopting a shock insulation support is adopted, the manufacturing cost of the shock insulation support is 1000 yuan/m, 4 piles are arranged for each pile, the pile diameter of a building pile foundation is 1m, the pile length is 25m, the number of piles is 4, and the manufacturing cost of the shock insulation support per building area is 43.4 yuan/m 2 . If the scheme of reinforcing the pile-cap system by using the shallow layer protection pile provided by the invention is adopted, the method comprises the following steps ofThe plum blossom type arrangement mode is that shallow protection piles are arranged below a bearing platform, bored piles are adopted, the diameter of each pile is 0.6m, the length of each pile is 4m, the number of piles is 4, and the unit price is about 500 yuan/m 3 The pile foundation of the building adopts the pipe pile, the diameter of the pile is 1m, the length of the pile is 25m, and the number of the piles is 4, so that the construction cost of the unit building area of the shallow layer protection pile is 24.5 yuan/m 2 . Comparing the two construction schemes, the invention has the advantages of lower cost, more stable structure and better anti-seismic performance.
The foregoing is merely exemplary of embodiments of the present invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides an improve earthquake-resistant structure of building pile foundation shock resistance in weak soil foundation, its characterized in that, earthquake-resistant structure include a plurality of arrange in shallow protection stake (1) in weak soil foundation (4), a plurality of shallow protection stake (1) are arranged between building pile foundation (2) and the periphery of cushion cap (3) and/or are arranged building pile foundation (2) below cushion cap (3), cushion cap (3) arrange in building pile foundation (2) pile top and rigid connection with it.
2. The earthquake-resistant structure for improving earthquake-resistant performance of building pile foundations in soft soil foundations according to claim 1, wherein: when the shallow layer protection piles (1) are arranged between building pile foundations (2) below the bearing platform (3), the shallow layer protection piles (1) are not connected with the bearing platform (3).
3. The earthquake-resistant structure for improving earthquake-resistant performance of building pile foundations in soft soil foundations according to claim 1, wherein: the pile length of the shallow layer protection pile (1) is not less than 3 times of the pile diameter of the building pile foundation (2) and not more than 6 times of the pile diameter of the building pile foundation (2).
4. The earthquake-resistant structure for improving earthquake-resistant performance of building pile foundations in soft soil foundations according to claim 1, wherein: the horizontal distance between the shallow layer protection pile (1) and the building pile foundation (2) is 1-4 times of the pile diameter of the building pile foundation (2).
5. The earthquake-resistant structure for improving earthquake-resistant performance of building pile foundations in soft soil foundations according to claim 1, wherein: and when the strength of the soil body around the shallow layer protection pile (1) is lower or the risk of deformation and sedimentation is high, the pile length of the shallow layer protection pile (1) is not less than 1/4 of the pile length of the building pile foundation (2).
6. The earthquake-resistant structure for improving earthquake-resistant performance of building pile foundations in soft soil foundations according to claim 1, wherein: when the pile top of the building pile foundation (2) is not provided with the bearing platform (3), the pile length of the shallow layer protection pile (1) is 1/3 of the pile length of the building pile foundation (2).
7. The earthquake-resistant structure for improving earthquake-resistant performance of building pile foundations in soft soil foundations according to claim 1, wherein: the shallow protection piles (1) can be arranged at intervals or continuously to form a shallow protection pile wall (5) when arranged at the periphery of the building pile foundation (2) and the bearing platform (3).
8. A method for improving the earthquake-resistant performance of a building pile foundation in a soft soil foundation, comprising the steps of:
when the foundation of the existing building with limited space is reinforced, shallow protection piles (1) are directly arranged in soft soil foundations (4) at the periphery of the building pile foundation (2), so that the protection of the existing building pile foundation (2) is rapidly formed.
9. The method for improving the earthquake-resistant performance of building pile foundations in soft soil foundations according to claim 8, wherein the construction process flow is as follows when the foundation of a newly built building foundation is reinforced: leveling a site, preparing construction, measuring and lofting, constructing a shallow layer protection pile (1), constructing a building pile foundation (2), arranging a bearing platform (3) and rigidly connecting the connecting part of the bottom of the bearing platform (3) and the top of the pile foundation.
10. The method for improving the earthquake-resistant performance of building pile foundations in soft soil foundations according to claim 9, wherein rubber materials are mixed in the building pile foundations (2) when the building pile foundations (2) are constructed, so that uneven lattice type rubber particles can be formed on the surfaces of the building pile foundations (2).
CN202310872295.0A 2023-07-17 2023-07-17 Earthquake-resistant structure and method for improving earthquake-resistant performance of building pile foundation in soft soil foundation Pending CN117107826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310872295.0A CN117107826A (en) 2023-07-17 2023-07-17 Earthquake-resistant structure and method for improving earthquake-resistant performance of building pile foundation in soft soil foundation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310872295.0A CN117107826A (en) 2023-07-17 2023-07-17 Earthquake-resistant structure and method for improving earthquake-resistant performance of building pile foundation in soft soil foundation

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CN117107826A true CN117107826A (en) 2023-11-24

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Application Number Title Priority Date Filing Date
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