Prestressed supporting structure for long rectangular foundation pit

A support structure and prestressing technology, which is applied in infrastructure engineering, excavation, construction, etc., can solve the problems of high cost of foundation pit support, low reuse rate of steel pipes, and large amount of steel pipes

Active Publication Date: 2014-08-13
武汉武建机械施工有限公司
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the existing foundation pit support methods adopt the method of setting reinforced concrete purlins around the foundation pit, and then arranging mesh steel pipe supports on the inner periphery of the purlins. When it is insufficient, the amount of steel pipes is large, and installation and removal are troublesome It takes up a lot of space, which is not conducive to the excavation of the earthwork in the foundation pit, and it cannot well apply prestress to the side wall of the foundation pit, and the support strength is low. Usually, the support force can only be increased by increasing the density of the steel pipe arrangement; and when different foundation pits are supported Need to use steel pipes of different sizes, and the reuse rate of steel pipes is low, resulting in high cost of foundation pit support

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Prestressed supporting structure for long rectangular foundation pit
  • Prestressed supporting structure for long rectangular foundation pit
  • Prestressed supporting structure for long rectangular foundation pit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0074] A detailed description will be given below of specific embodiments of the present invention according to the accompanying drawings.

[0075] according to Figure 1 to Figure 28 As shown, a prestressed support structure for a long rectangular foundation pit described in this embodiment includes cement mixing piles 40 driven downward along the outer periphery of the foundation pit, and the upper part of the cement mixing piles is poured with a reinforced concrete structure. For the top beam, the inner circumference of the top beam is connected with purlin-shaped steel 10, and the purlin-shaped steel is fixedly connected with the top beam through a steel bar connector 70.

[0076] The purlin-shaped steel is H-shaped steel, and the flanges on both sides are equidistantly provided with connecting hole groups, each connecting hole group is composed of two connecting hole units, and each connecting hole unit has six connecting holes, six The connecting holes are distributed i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a prestressed supporting structure for a long rectangular foundation pit. Angle braces are arranged at apexes of the foundation pit, a set of fish-bellied beam devices is arranged at short edges of the foundation pit, at least two fish-bellied devices are arranged at long edges of the foundation pit, opposite braces are arranged at positions between each two adjacent fish-bellied beam devices between the two long edges, and thus the foundation pit is supported by all the members together. The angle braces and the opposite braces generate prestress by means of jack adjustment. The fish-bellied beam devices generate prestress by means of adjusting tightness of steel strands. The supporting structure occupies small space integrally and facilitates excavation of the foundation pit with efficiency improved; as most of the members of the supporting structure are section bars in standard size, bolt connection, mounting and demounting of the supporting structure are facilitated, the reutilization rate is high and cost of the supporting for the foundation pit is lowered integrally.

Description

technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to a prestressed support structure for foundation pits. Background technique [0002] Most of the existing foundation pit support methods adopt the method of setting reinforced concrete purlins around the foundation pit, and then arranging mesh steel pipe supports on the inner periphery of the purlins. When it is insufficient, the amount of steel pipes is large, and installation and removal are troublesome It takes up a lot of space, which is not conducive to the excavation of the earthwork in the foundation pit, and it cannot well apply prestress to the side wall of the foundation pit, and the support strength is low. Usually, the support force can only be increased by increasing the density of the steel pipe arrangement; and when different foundation pits are supported Steel pipes of different sizes need to be used, and the reuse rate of steel pipes is low, res...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E02D17/04
Inventor 王承存王志贵刘正斌王飞
Owner 武汉武建机械施工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap