Deep-buried composite vibration isolation wall capable of resisting lateral soil pressure
By designing a deep buried composite vibration isolation wall that combines the "return" concrete structural wall with trapezoidal beams, embedded and fixed elastic materials, the instability problem of the deep buried vibration isolation wall under lateral soil pressure is solved, and effective vibration isolation effect and stability are achieved.
Patent Information
- Application Number
- CN202510415009.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2025-06-27
AI Technical Summary
When the existing deep buried vibration isolation wall is large, the lateral soil pressure is high, which may lead to instability of the vibration isolation wall and instability and deformation of the surrounding structures.
A "return" concrete structural wall is designed, combining trapezoidal beams and matrix fixed grooves, embedded with elastic materials and fixed by a transverse frame, forming a deep buried composite vibration isolation wall that can resist lateral soil pressure.
Effectively resist the lateral soil pressure of deep buried vibration isolation walls, maintain the vibration isolation performance and stability of vibration isolation walls, avoid deformation and instability of concrete walls, and ensure the safety and stability of surrounding site buildings.
Smart Images
Figure CN120211307A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of urban rail transit environmental vibration control, and more specifically, to a deep buried vibration isolation wall for environmental vibration control that can resist lateral earth pressure. Background Art
[0002] In recent years, with the rapid development of urban rail transit, the lines inevitably pass through the city center area. The vibration and secondary radiation noise pollution caused by train operation have become the direct reasons for the annoyance and complaints of residents along the urban rail transit line. Environmental vibration control measures provide an effective solution for the harmonious co - construction and development of urban rail transit and the space land along the line. Among them, the vibration isolation measures for the propagation path effectively block the vibration propagation by setting vibration isolation barriers between buildings and lines, which is the last line of defense for subway environmental vibration control. Especially for the already - operating lines and already - built buildings, the vibration isolation measures for the propagation path even become the only way.
[0003] Existing research shows that the continuous vibration isolation barrier (vibration isolation wall) in the vibration isolation measures for the propagation path has a better vibration isolation effect compared with the discontinuous vibration isolation (vibration isolation row piles). The vibration isolation effect of the vibration isolation wall is sensitive to the depth of the vibration isolation wall. The greater the depth, the more significant the vibration isolation effect. Due to the influence of factors such as the buried depth of the rail transit line, the buried depth of buildings, and the vibration reduction requirements, the vibration isolation wall is often required to be deeply buried in the underground soil (H>6m). However, in actual engineering applications, there are inevitably existing buildings and structures between the line and the sensitive building. When the buried depth of the vibration isolation wall is large, the lateral earth pressure on the vibration isolation wall is large, which will cause the instability of the vibration isolation wall, resulting in horizontal displacement of the surrounding soil mass and structures, and may lead to the instability and deformation of the surrounding structures.
[0004] Therefore, how to design a deep - buried vibration isolation wall that can not only effectively isolate vibration but also ensure the stability of the surrounding existing buildings and structures is an urgent problem to be solved by those skilled in the art. Summary of the Invention
[0005] In view of this, the present invention provides a deep - buried composite vibration isolation wall that can resist lateral earth pressure, overcoming the above - mentioned defects.
[0006] In order to achieve the above object, the present invention adopts the following technical solutions:
[0007] A deep - buried composite vibration isolation wall capable of resisting lateral earth pressure, comprising: a "return" - shaped concrete structure wall, which is composed of a top plate, a bottom plate and side walls, forming a "return" - shaped structure; trapezoidal beams arranged at intervals along the extension direction of the deep - buried composite vibration isolation wall, and the trapezoidal beams are fixedly connected to the side walls; fixing grooves distributed in a matrix pattern are arranged at intervals along the depth and extension direction on the inner wall of the side walls; elastic materials are fixed in the "return" - shaped concrete structure wall through transverse skeletons, and both ends of the transverse skeletons are connected to the side walls through the fixing grooves.
[0008] Optionally, socket - cover plate assemblies are arranged at intervals on the top plate of the "return" - shaped concrete structure wall for inspecting and replacing the elastic materials.
[0009] Optionally, an elastic buffer layer is arranged at the end of the transverse skeleton.
[0010] Optionally, the steps for obtaining the construction parameters of the "return" - shaped concrete structure wall and the trapezoidal beams are as follows:
[0011] Based on the relative position parameters between the vibration source and the building and the vibration isolation requirement parameters, the layout position, depth of the deep - buried composite vibration isolation wall and the filling width of the elastic materials are determined by using the numerical simulation method;
[0012] According to the depth, a set of material parameters of the soil body within the depth range of the construction site is obtained;
[0013] Based on the upper - covering soil data, ground surcharge data and the set of material parameters, the lateral water and soil pressure and the lateral surcharge distribution acting on the deep - buried composite vibration isolation wall are calculated;
[0014] Detect the surrounding pipelines and existing buildings and structures in the construction area of the deep - buried composite vibration isolation wall, and obtain their spatial position information and deformation control indexes;
[0015] According to the lateral water and soil pressure, the deformation control indexes and the construction requirements of the deep - buried composite vibration isolation wall, the construction parameters of the "return" - shaped concrete structure wall and the trapezoidal beams are calculated.
[0016] Optionally, the construction parameters of the "return" - shaped concrete structure wall are the thickness of the top plate, the thickness of the bottom plate and the thickness of the side walls.
[0017] Optionally, the construction parameters of the trapezoidal beam are the interval spacing, the top width, the bottom width and the thickness of the trapezoidal beam.
[0018] As can be seen from the above - mentioned technical solutions, the present invention provides a deep - buried composite vibration isolation wall capable of resisting lateral earth pressure. Compared with the prior art, it has the following beneficial effects:
[0019] 1. The present invention can effectively resist the lateral earth pressure on the deeply buried vibration isolation wall. By arranging trapezoidal beams along the extension direction of the vibration isolation wall, the elastic material inside the vibration isolation wall is kept unchanged under the action of the lateral earth pressure, effectively ensuring the vibration isolation performance of the vibration isolation wall and maintaining the stability of the entire vibration isolation wall, avoiding the deformation and instability of the concrete wall caused by the action of the lateral earth pressure, maintaining the safety and stability of the surrounding site buildings and structures, and realizing the engineering application of the vibration isolation wall with a burial depth greater than 6m.
[0020] 2. The present invention wraps the elastic material with "return" - shaped concrete material, which can protect the internal elastic material from environmental corrosion and damage, improve the durability of the vibration isolation wall, and effectively ensure the vibration isolation effect of the vibration isolation wall.
[0021] 3. The cross - bar composed of the side - wall groove of the return - shaped cavity, the transverse skeleton and the elastic material at the contact surface between the two can effectively fix the elastic material, maintain the vertical displacement of the elastic material, improve the construction safety, and avoid the floating of the elastic material caused by the rising of the internal water level during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.
[0023] Figure 1 It is a three - dimensional structure schematic diagram of the deeply buried composite vibration isolation wall that can resist lateral earth pressure provided by the present invention;
[0024] Figure 2 It is a top - view schematic diagram of the deeply buried composite vibration isolation wall that can resist lateral earth pressure provided by the present invention;
[0025] Figure 3 It is a 1 - 1 sectional structure schematic diagram of the deeply buried composite vibration isolation wall that can resist lateral earth pressure provided by the present invention;
[0026] Figure 4 It is a 2 - 2 sectional structure schematic diagram of the deeply buried composite vibration isolation wall that can resist lateral earth pressure provided by the present invention;
[0027] Figure 5 It is a 3 - 3 sectional structure schematic diagram of the deeply buried composite vibration isolation wall that can resist lateral earth pressure provided by the present invention;
[0028] Figure 6 It is a schematic diagram of the fixed groove structure of the side wall in the deeply buried composite vibration isolation wall that can resist lateral earth pressure provided by the present invention;
[0029] Figure 7 Structural schematic diagram of the transverse framework provided by the present invention
[0030] In the figure, 1 is a "return"-shaped concrete structure wall, 1-1 is a side wall; 2 is a trapezoidal beam; 3 is an elastic material; 4 is a tongue-and-groove cover plate assembly; 5 is a fixing groove; 6 is a transverse framework; 7 is an elastic buffer layer. Specific embodiments
[0031] The technical solutions in 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0032] The embodiments of the present invention disclose a deep-buried composite vibration isolation wall that can resist lateral earth pressure, as Figures 1-6 shown, including: a "return"-shaped concrete structure wall 1, which is composed of a top plate, a bottom plate and side walls 1-1 to form a "return" shape; trapezoidal beams 2 arranged at intervals along the extension direction of the deep-buried composite vibration isolation wall, and the trapezoidal beams 2 are fixedly connected to the side walls 1-1; fixing grooves 5 distributed in a matrix are arranged at intervals along the depth and extension directions on the inner walls of the side walls 1-1; the elastic material 3 is fixed in the "return"-shaped concrete structure wall 1 through the transverse framework 6, and both ends of the transverse framework 6 are connected to the side walls 1-1 through the fixing grooves 5.
[0033] In one embodiment, an elastic buffer layer 7 is provided at the end of the transverse framework 6, as Figure 7 shown.
[0034] Furthermore, the deep-buried composite vibration isolation wall in this embodiment is a deep-buried composite vibration isolation wall that can resist lateral earth pressure and is used for vibration isolation walls with a depth greater than 6m, and includes an elastic material 3, a "return"-shaped concrete structure wall 1 and a plurality of trapezoidal beams 2 continuously distributed along the extension direction of the deep-buried composite vibration isolation wall;
[0035] wherein, each trapezoidal beam 2 is a cast-in-place structure and is fixedly connected to the "return"-shaped concrete structure wall 1, and the interval between the trapezoidal beams 2 along the extension direction of the deep-buried composite vibration isolation wall is L;
[0036] The "return"-shaped concrete structure wall 1 is a cast-in-place structure, and a plurality of fixing grooves 5 are arranged at intervals along the depth direction and the extension direction inside the two side walls 1-1;
[0037] The elastic material 3 is EPS filling material, which is fixed in the "return" - shaped concrete structure wall 1 by fixing grooves 5 using horizontal skeletons 6 such as steel pipes and nylon rods, and elastic materials (i.e., elastic buffer layer 7) are installed at the contact surfaces of both ends of the steel pipes and nylon rods with the grooves; when site conditions permit, there can also be no filling material, that is, air is used as the material for isolating vibration transmission; other elastic materials 3 such as rubber and polyurethane can also be used to meet the vibration - reduction requirements.
[0038] In one embodiment, tongue - and - groove cover plate assemblies 4 are arranged at intervals on the top plate of the "return" - shaped concrete structure wall 1 for inspecting and replacing the elastic material 3.
[0039] Further, at the top of the "return" - shaped concrete structure wall 1, tongue - and - groove concrete cover plates or steel cover plates are arranged at intervals for inspecting the material physical properties and durability of the internal elastic material 3 and replacing the elastic material 3.
[0040] In one embodiment, the steps for obtaining the construction parameters of the "return" - shaped concrete structure wall 1 and the trapezoidal beam 2 are as follows:
[0041] Based on the relative position parameters between the vibration source and the building and the vibration isolation requirement parameters, the numerical simulation method is used to determine the layout position, depth, and filling width of the elastic material 3 of the deeply - buried composite vibration isolation wall;
[0042] According to the depth, the material parameter set of the soil body within the depth range of the construction site is obtained. The material parameter set includes density, cohesion, internal friction angle, lateral pressure coefficient, subgrade coefficient, Poisson's ratio, and anti - floating water level parameters; based on the upper - covering soil data, ground surcharge data, and the material parameter set, the lateral water and soil pressure and lateral surcharge distribution acting on the deeply - buried composite vibration isolation wall are calculated;
[0043] Detect the surrounding pipelines and existing buildings and structures in the construction area of the deeply - buried composite vibration isolation wall, and obtain their spatial position information and deformation control indicators;
[0044] According to the lateral water and soil pressure, deformation control indicators, and the construction requirements of the deeply - buried composite vibration isolation wall, the construction parameters of the "return" - shaped concrete structure wall 1 and the trapezoidal beam 2 are calculated.
[0045] In one embodiment, the construction parameters of the "return" - shaped concrete structure wall 1 are the thickness of the top plate, the thickness of the bottom plate, and the thickness of the side wall 1 - 1.
[0046] In one embodiment, the construction parameters of the trapezoidal beam 2 are the interval spacing, top width, bottom width, and thickness of the trapezoidal beam 2.
[0047] Further, the calculation steps of the construction parameters are as follows:
[0048] According to the relative position between the vibration source and the building and the vibration isolation requirements, using the numerical simulation method, the position, depth H, and width C of the elastic material 3 of the deeply - buried composite vibration isolation wall are determined;
[0049] According to the determined depth H, obtain the material parameters (density, cohesion, internal friction angle, lateral pressure coefficient, subgrade coefficient, Poisson's ratio) of the soil within the depth range of H, and the anti-floating water level. Calculate the lateral soil and water pressure and lateral overloading according to the overlying soil and ground surcharge. Detect the surrounding pipelines and existing buildings and structures, and clarify their deformation control requirements.
[0050] Then, according to the lateral soil and water pressure, the crack and strength requirements of the vibration isolation wall, and the deformation requirements of the surrounding pipelines and existing buildings and structures, calculate the distribution interval L, the upper width B1, the lower width B2, the thickness h of the trapezoidal beam 2, and the top plate thickness b1, the bottom plate thickness b2, and the side wall 1-1 thickness c1 of the "return"-shaped concrete structure wall 1. This embodiment can realize the implementation of the deeply buried vibration isolation wall, preventing the failure of the vibration isolation wall due to excessive lateral deformation caused by too large soil pressure and the instability and deformation of the surrounding soil and buildings and structures.
[0051] Furthermore, use professional structural calculation software such as SAP2000 and MIDAS to establish a calculation model for the deeply buried composite vibration isolation wall structure, calculate the self-weight of the structure, the soil and water pressure on the top plate of the structure and the water pressure on the bottom plate, calculate the lateral loads such as soil pressure, water pressure, and seismic action, and add the ground surcharge; apply load combinations to the calculation model, calculate the internal forces of the structural members under different load combinations, including bending moment, shear force, axial force, etc., and perform concrete section checking according to the calculation results of the structural internal forces, and check the crack width of the structure.
[0052] Furthermore, for a deeply buried composite vibration isolation wall with a depth H of 10m and a C of 0.5m, according to the calculation, the distribution interval L of the trapezoidal beam 2 is 3m, the upper width B1 is 0, the lower width B2 is 0.6m, the thickness h is 0.5m, the top plate thickness b1 of the "return"-shaped concrete structure wall 1 is 0.2m, the bottom plate thickness b2 is 0.8m, and the side wall 1-1 thickness c1 is 0.5m. The maximum width of the structure at the maximum position is 2.7m. Considering the operation space of 0.8m on one side for the two-side support system, the maximum operation space only needs 4.3m.
[0053] Among them, the bottom plate of the "return"-shaped concrete structure wall 1 is designed with a certain thickness to maintain the balance of the soil pressure at both sides, control the deformation of the side wall 1-1 of the "return"-shaped concrete structure wall 1, and avoid the compression deformation of the internal elastic material 3, so as to ensure the vibration control effect of the elastic material 3.
[0054] After obtaining the construction parameters, carry out construction according to the construction parameters. The construction method is as follows:
[0055] Step 1, construct the vertical support structure and set up dewatering wells in the pit, excavate the foundation pit in layers and simultaneously erect the support system. Immediately construct the concrete cushion after the excavation of the foundation bottom is completed, and construct the waterproof layer after the cushion hardens.
[0056] Step 2: Bind the steel bars and construct the formwork for the "return" - shaped structure and the trapezoidal beam 2. Among them, due to the limited space in the middle of the "return" - shaped structure, an inflatable rubber capsule is selected as the internal formwork.
[0057] Step 3: Pour the concrete structure step by step from bottom to top. The pouring process of the top - plate concrete is planned to be implemented in a subsequent stage.
[0058] Step 4: After the concrete strength meets the design requirements, fill the "return" - shaped concrete structure wall 1 with EPS elastic material, and install the transverse skeleton 6 (including the elastic material 3) in the groove of the side wall 1 - 1.
[0059] Step 5: Bind the steel bars of the top - plate and set up the formwork, and pour the top - plate concrete. Complete the closure of the inspection holes and do a good job in waterproof treatment. After the waterproof layer construction of the top - plate meets the design requirements, carry out the backfilling of the upper - layer soil.
[0060] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description of the method part.
[0061] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1. A deep buried composite vibration isolation wall capable of resisting lateral earth pressure, characterized in that: include: A U-shaped concrete structural wall (1), the U-shaped concrete structural wall (1) comprising a top plate, a bottom plate and a side wall (1-1) to form a U-shaped structure; trapezoidal beams (2) arranged at intervals along the extension direction of a deeply buried composite vibration isolation wall, the trapezoidal beams (2) being fixedly connected to the side wall (1-1); the inner wall of the side wall (1-1) being provided with matrix-distributed fixing grooves (5) at intervals along the depth and extension direction; an elastic material (3) being fixed in the U-shaped concrete structural wall (1) via a transverse frame (6), the two ends of the transverse frame (6) being connected to the side wall (1-1) via the fixing grooves (5).
2. The deep-buried composite vibration isolation wall capable of resisting lateral earth pressure according to claim 1, characterized in that: Tongue-and-groove cover plate assemblies (4) are arranged at intervals on the top plate of the U-shaped concrete structural wall (1) and are used for inspecting and replacing the elastic material (3).
3. The deep-buried composite vibration isolation wall capable of resisting lateral earth pressure according to claim 1, characterized in that: An elastic buffer layer (7) is provided at the end of the transverse frame (6).
4. The deep-buried composite vibration isolation wall capable of resisting lateral earth pressure according to claim 1, characterized in that: The steps for obtaining the construction parameters of the U-shaped concrete structural wall (1) and the trapezoidal beam (2) are as follows: Based on the relative position parameters between the vibration source and the building and the vibration isolation requirement parameters, a numerical simulation method is used to determine the layout position and depth of the deep-buried composite vibration isolation wall and the filling width of the elastic material (3); Acquire a material parameter set of soil within the depth range of the construction site according to the depth; Calculating the lateral water and soil pressure and lateral overload distribution acting on the deep buried composite vibration isolation wall based on the upper covering soil data, the ground overload data and the material parameter set; Detecting pipelines and existing buildings and structures around the construction area of the deep-buried composite vibration isolation wall to obtain their spatial position information and deformation control indicators; The construction parameters of the U-shaped concrete structural wall (1) and the trapezoidal beam (2) are calculated according to the lateral water and soil pressure, the deformation control index and the construction requirements of the deep-buried composite vibration isolation wall.
5. The deep-buried composite vibration isolation wall capable of resisting lateral earth pressure according to claim 4, characterized in that: The construction parameters of the U-shaped concrete structural wall (1) are the thickness of the top plate, the thickness of the bottom plate and the thickness of the side wall (1-1).
6. The deep-buried composite vibration isolation wall capable of resisting lateral earth pressure according to claim 4, characterized in that: The construction parameters of the trapezoidal beam (2) are the spacing, top width, bottom width and thickness of the trapezoidal beam (2).