Self-supporting construction method for multilayer underground structure next to existing building

A technology for existing buildings and underground structures, applied to underwater structures, foundation structure engineering, construction, etc., to achieve the effect of reducing engineering volume, shortening pile length and pile diameter, and shortening construction period

Inactive Publication Date: 2009-12-30
THE 4TH CONSTR ENG CO LTD OF CHINA RAILWAY NO 4 ENG GRP
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] In order to solve the problems of safety, quality, environment and cost in the construction of deep foundation pits adjacent to existing buildings, the present invention provides a deep foundation pit construction method that uses the underground structure body to provide internal support adjacent to existing buildings

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
  • Self-supporting construction method for multilayer underground structure next to existing building
  • Self-supporting construction method for multilayer underground structure next to existing building
  • Self-supporting construction method for multilayer underground structure next to existing building

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Example 1: Anqing Xiangzhangli. Nashui’an Residential Community is located at Huxin North Road, Anqing City, Anhui Province. The underground garage 2 of the community is designed to have two floors, and the building area of ​​each floor is 4232m2 2 . Among them, the basement floor is an ordinary basement, which is used for bicycle storage, garages and equipment rooms in normal times. The east side of the proposed underground garage and the existing 11 # The residential building 1 is next to, and the shortest distance is only about 5m. If the earthwork excavation is directly carried out on the underground garage 2, it will certainly endanger the existing 11 # The main structure of residential building 1 is safe (see the relative position for details figure 1 , figure 2 ). Adopting the inventive method to carry out garage 2 constructions in construction process has guaranteed existing 11 # The safety of the residential building 1 speeds up the construction progress,...

Embodiment 2

[0090] The steel support 12 can also be directly supported on the cast-in-place slab, and the planar rigidity of the slab is large, which meets the support requirements. The channel steel used for the steel support 12 can be selected in the range of 250mm-300mm in width and 2m-3m in length according to actual conditions.

[0091] Others are with embodiment 1.

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 relates to a self-supporting construction method for a multilayer underground structure next to an existing building. When the distance between a proposed underground building and the existing building is within 15 meters, the construction method is adopted, and the method specifically comprises the following operation steps: 1, supporting pile construction; 2, developing and controlling an earthwork of a negative first layer; 3, controlling holes at a frame column position and setting a retaining wall; 4, carrying out the construction of frame columns of a negative second layer; 5, carrying out the construction of top beams and plates of the negative second layer and columns, beams and plates of the negative first layer; 6, mounting horizontal steel supports; 7, developing and digging the earthwork of the negative second layer; and 8, carrying out the construction of other structures of bottom plates, walls and the like of the negative second layer according to a conventional method. The method skillfully uses the rigidity of an underground engineering structure self to provide a supporting point for the supporting pile so that the supporting pile is changed into a three-span indeterminate member from a cantilever member, so the bending moment load effect of the supporting pile is greatly reduced, then the designed pile length and section area of the supporting pile can be greatly reduced, the construction cost is saved by about over 35 percent, and the integral construction progress of the underground structural engineering is accelerated.

Description

technical field [0001] The invention relates to a construction method for a deep foundation pit of a multi-layer underground structure adjacent to an existing building. Background technique [0002] The reform and opening up has brought about a climax of urban construction, urban land resources are increasingly scarce, and urban construction gradually extends to the sky and underground. In urban construction where every inch of land is expensive, the development and utilization of underground space has become a major development trend. For this reason, excavation of underground structures next to existing buildings is becoming more and more frequent. How to ensure the safety and stability of the existing buildings adjacent to the construction process has become an important and difficult point in the construction process. [0003] The current construction process of the prior art: first, support is carried out around the deep foundation pit to be excavated, then the founda...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045E02D17/02E02D27/12
Inventor 焦宁艳李明杨立胜仰宗录
Owner THE 4TH CONSTR ENG CO LTD OF CHINA RAILWAY NO 4 ENG GRP
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