Outside-enhanced retaining supporting structure

A technology for supporting structures and retaining walls, which is applied to underwater structures, infrastructure engineering, water conservancy projects, etc., can solve problems such as hindering the operation of construction machinery, large length of construction, and damage to buildings and structures, so as to reduce the need for demolition of supports Or there is no need to remove the support, the rigidity and bearing capacity are large, and the effect of reducing the impact of vibration

Inactive Publication Date: 2012-07-18
中煤江南建设发展集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The pile (or ground connection wall) + internal support support system has the following disadvantages: 1. The concrete support needs to be molded, installed steel bars, poured concrete, etc., which requires a long construction period; when the main structure of the basement is constructed later, the support needs to be removed. It takes a lot of manpower and material resources, and it will generate dust and pollute the environment
2. If steel support is used, large-scale equipment is required for hoisting
In addition, the steel support is assembled on site, the integrity is not strong, and the system is unstable. It is very easy to cause foundation pit collapse and damage accidents, damage surrounding buildings and structures, bring huge property losses, and cause serious social impact.
3. After the excavation depth of the foundation pit increases, the main construction period of the foundation pit construction is determined by the construction and removal of the support in many cases, and the construction period of the foundation pit using the internal support system will be extended a lot
4. Since the inner support occupies the internal space of the excavation of the foundation pit, which hinders the operation of the construction machinery, it causes a lot of inconvenience in the excavation of the earthwork in the foundation pit and the construction of the main structure of the basement in the later stage
During the construction process, the anchor cable needs drilling, anchoring, anchoring, grouting, waiting for the setting period, etc., and the construction period is long
2. During the construction of the anchor cable, it is necessary to lay a large length, and the surrounding environment has a large impact range, especially in the current urban foundation pit, where there are a large number of municipal pipelines, building foundations, subway tunnels, etc. within a certain range
In the case of complex surrounding environment, laying anchor cables may damage buildings and structures, so the use of anchor cables is also greatly restricted.
3. If it is an anchor cable in the soil layer, due to the creep of the soil, the displacement of the anchor cable support system will continue to increase, resulting in a dangerous situation in the support system
4. Opening holes in the sand layer and setting anchor cables will also bring out a large amount of sand and water, causing ground subsidence, etc., seriously affecting the safety of the foundation pit support system and the surrounding environment
[0005] The current slope pile-anchor support system, due to the creep effect of the anchor cable in the soil layer, will bring danger to the permanent use of the slope and limit its use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] refer to figure 1 , image 3 As shown, the external reinforced soil retaining support structure of the present invention is a structure used for foundation pit support (if it is used for slope support, it does not need to be surrounded in a circle), including a continuous wall surrounded by support wall panels 1 In the retaining wall, there are longitudinal ribs 2 distributed on the outer side of the supporting wall panel 1, and a connecting plate 3 is arranged on the periphery of the supporting wall panel 1. The connection plate 3 in the example is ring-shaped, and the connection plate 3 can also be a non-closed structure, such as a continuous distance, which depends on the specific needs of the project;

Embodiment 2

[0044] refer to figure 2 , Figure 4 As shown, the externally reinforced soil retaining support structure of the present invention includes a continuous retaining wall surrounded by support wall panels 1, longitudinal ribs 2 are distributed outside the support wall panels 1, and The connecting beam 4, the supporting wallboard 1, the longitudinal rib plate 2, and the connecting beam 4 together form a rigid whole. The connecting beam 4 in this embodiment is ring-shaped and has three rows in total. The connecting beam 4 is located at the upper and near end of the supporting wallboard 1. Outside; the connection beam 4 in the present invention can also be a non-closed structure, such as a continuous distance, which also depends on the specific needs of the project.

Embodiment 3

[0046] refer to figure 1 , Figure 5 As shown, the externally reinforced soil retaining support structure of the present invention includes a continuous retaining wall surrounded by support wall panels 1, longitudinal ribs 2 are distributed outside the support wall panels 1, and The annular connecting plate 3, the supporting wallboard 1, the longitudinal rib plate 2, and the annular connecting plate 3 together form a rigid whole. The connecting plate 3 in this embodiment is ring-shaped, and the connecting plate 3 is located outside the upper proximal end of the supporting wallboard 1. The connecting plate 3 is provided with a back tension anchor cable 5 to enhance the mechanical performance of the building structure system, and the back tension anchor cable 5 adopts a vertical prestressed anchor cable.

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PUM

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Abstract

The invention discloses an outside-enhanced retaining supporting structure which belongs to retaining supporting structures, and aims to provide a retaining supporting structural system, which is reasonable in structure, convenient in construction, short in construction period, low in construction cost and effective in leak proofing. The outside-enhanced retaining supporting structure is technically characterized in that a continuous retaining wall is formed by support wallboards by enclosing, longitudinal rib plates are distributed on the outer side of each support wallboard, connecting plates or connecting beams are further disposed on the periphery of each support wallboard, and the support wallboards, the longitudinal rib plates and the connecting plates or connecting beams form a rigid whole. The outside-enhanced retaining supporting structure is used for foundation pit or slope supporting.

Description

technical field [0001] The invention relates to a soil retaining and supporting structure, and more specifically, relates to an externally reinforced soil retaining and supporting structure. Background technique [0002] The current foundation pit support system: the flexible support system is mainly in the form of anchor rod + shotcrete mesh reinforcement surface layer; the rigid support form is pile or ground connection wall + support or anchor cable. The flexible support system is low in cost, but its displacement control ability is poor and the excavation depth is limited. The rigid support system is expensive, but it has a strong ability to control surrounding deformation and a large excavation depth. When the excavation depth of the foundation pit is relatively large, the mechanical properties of the surrounding soil layer are poor, and the surrounding environment is severe, the pile (or ground connection wall) + internal support (or anchor cable) support system is us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D29/02
Inventor 马文旭
Owner 中煤江南建设发展集团有限公司
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