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Combined supporting system of foundation pit and construction method thereof

A support system and foundation pit technology, applied in infrastructure engineering, excavation, construction, etc., can solve the problems of long construction period and high cost, and achieve the effects of protecting the environment, optimizing form and supporting capacity, and ensuring safety

Pending Publication Date: 2018-11-02
CHINA CONSTR EIGHT ENG DIV CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects existing in the existing technology, a combined support system for foundation pit and its construction method are provided to solve the problems of long construction period and high cost of the traditional reinforced concrete support system

Method used

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  • Combined supporting system of foundation pit and construction method thereof
  • Combined supporting system of foundation pit and construction method thereof
  • Combined supporting system of foundation pit and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0033] figure 1 It is a schematic diagram of the combined support system of the foundation pit according to the first embodiment of the present invention, figure 2 for figure 1 Partial enlarged view of place A in the first embodiment, image 3 It is a block diagram of the axial force servo compensation system of the combined support system of the foundation pit according to the embodiment of the present invention.

[0034] refer to Figure 1 to Figure 3 As shown, the present invention provides a combined support system for a foundation pit, including: an enclosure structure, a horizontal support structure and an axial force servo compensation device 3 .

[0035] Specifically, the enclosure structure is arranged in the soil around the foundation pit. The enclosure structure is a foundation pit enclosure structure, including sheet pile type, column type, underground diaphragm wall, self-supporting cement-soil retaining wall, combined type, and caisson method. In this embod...

no. 2 example

[0079] Figure 4 It is a schematic diagram of the combined support system of the foundation pit according to the second embodiment of the present invention.

[0080] refer to Figure 4 The difference between this embodiment and the first embodiment is that the concrete support only includes multiple first concrete supports 21 .

[0081] Specifically, the enclosure structure is connected with purlins arranged along the edge of the foundation pit, and the purlins include connected concrete purlin sections and steel purlin sections 1 . The first concrete support 21 is connected to the concrete purlin section. A plurality of first steel supports 22 are respectively supported between the steel purlin section 1 and the first concrete supports, and a plurality of second steel supports are respectively supported between two adjacent first concrete supports 21 .

[0082] The first concrete support 21 is embedded with a pre-embedded steel plate, one end of the second steel support is...

no. 3 example

[0084] Figure 5 It is a schematic diagram of the combined support system of the foundation pit according to the third embodiment of the present invention.

[0085] refer to Figure 5 The difference between this embodiment and the first embodiment is that the concrete support includes a first concrete support 211 and a second concrete support 212 . The first concrete support 211 is arranged along the first horizontal direction, and the second concrete support 212 is arranged along the second horizontal direction. The first concrete support 211 is perpendicular to the second concrete support 212 . The concrete supports are in the shape of a cross.

[0086] Specifically, purlins are connected to the enclosure structure, and the purlins include connected concrete purlin sections and steel purlin sections 1 . The first concrete support is connected to the concrete purlin section. Multiple sets of steel supports are respectively supported between the steel purlin section 1 and...

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PUM

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Abstract

The invention provides a combined supporting system of a foundation pit and a construction method thereof. The combined supporting system of the foundation pit comprises an enclosing purlin arranged along the edge of the foundation pit, a horizontal supporting structure comprising a concrete support and a plurality of first steel supports supported in the foundation pit, and an axial force servo compensation system, wherein the concrete support comprises a plurality of first concrete support bodies and a plurality of second concrete support bodies which are connected to the enclosing purlin; the first concrete support bodies are arranged in the first horizontal direction; the second concrete support bodies are arranged in the second horizontal direction crossed with the first horizontal direction; the first steel supports are supported between the enclosing purlin and the first concrete support bodies as well as between the enclosing purlin and the second concrete support bodies; and the axial force servo compensation system comprises hydraulic jacks installed at one ends of the first steel supports, the hydraulic jacks are connected with hydraulic power pump stations through hydraulic oil pipes, pressure sensors are installed inside the hydraulic oil pipes, and the pressure sensors and the hydraulic power pump stations are connected with controllers. The problems that traditional steel bar concrete supporting systems are long in construction period and high in cost are solved.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a combined support system for a foundation pit and a construction method thereof. Background technique [0002] With the large-scale development of underground space, building foundation pit engineering is developing in the direction of large-scale. Large-scale foundation pit, generally refers to the foundation pit area up to 10000m 2 and above. The traditional reinforced concrete support system not only has a long construction period and high cost, but also produces a large amount of construction waste and pollutes the environment; for the steel support system, when the support length is too long, it will cause serious prestress loss and compression rods. Stability and other issues, so it is not suitable for large foundation pits. Contents of the invention [0003] In order to overcome the defects of the existing technology, a combined support system for found...

Claims

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Application Information

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IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 孙旻王浩方兴杰冉岸绿韩磊王国欣
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD