Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Blasting demolition method of prestressed beams of complex building structure

A technology of prestressed beams and building structures, applied in the direction of blasting, etc., can solve problems such as difficulty in disintegration, affecting the effect of collapse, and difficulty in destroying, and achieve the effects of improving safety, reducing the amount of explosives, and reducing the amount of explosives

Inactive Publication Date: 2018-10-02
中铁四院集团工程建设有限责任公司
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the existing blasting demolition method mentioned in the above background technology is difficult to disassemble, difficult to destroy and affect the collapse effect when applied to buildings with prestressed beams, and to provide a prestressed beam with complex building structures. Blasting demolition method

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
  • Blasting demolition method of prestressed beams of complex building structure
  • Blasting demolition method of prestressed beams of complex building structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] A certain building was rebuilt and expanded several times, and the overall structure is extremely complex. It was originally a four-story brick-concrete structure building, which was later increased to ten floors. There is a prestressed beam interlayer between, such as figure 1 shown.

[0026] like figure 1 As shown, the lower building 3 of the present embodiment is a four-story brick-concrete structure building, the prestressed beam 2 is a supporting beam body between the fourth floor and the fifth floor, and is a post-tensioned prestressed beam, and the upper building 1 is Six-story frame structure.

[0027] The actual blasting demolition work is as follows:

[0028] Step 1. Measure and calculate the length L=18m, vertical height H=2m, width B=0.6m of the prestressed beam 2 to be demolished by blasting, and the gravity lo...

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 the technical field of building construction, and in particular to a blasting demolition method of prestressed beams of a complex building structure. The method comprises thefollowing steps that 1), the ultimate tensile strength of the prestressed beams is calculated, blast holes are drilled in the prestressed beams, and explosives capable of damaging the structural stability of the prestressed beams are buried into the blast holes; 2), blasting points are arranged on the portions, above the prestressed beams and below the prestressed beams, of a building structure; and 3), the blasting points on the building structure are sequentially detonated until the structure is all completely collapsed. The method has the characteristics of reasonable design, safety, reliability and simplicity and convenience in construction, and is suitable for demolition blasting of the prestressed beams of the various complex-structure buildings.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a method for blasting and demolishing prestressed beams of complex building structures. Background technique [0002] From the early 1980s to the present, prestressing technology has achieved unprecedented development, and the application of prestressed concrete structures has appeared in projects such as super high-rise, super long span, super large volume, super long and large area, and super heavy load. The post-tensioned prestressed beam is to penetrate the prestressed tendon in the reserved hole after the concrete of the member reaches the specified strength and stretch it, and then use the anchor to anchor the stretched prestressed tendon at the end of the member. Relying on the anchorage at the end of the component, the pretensioning force of the prestressed tendon is transmitted to the concrete component to generate precompressive stress. [0003] In recent...

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): F42D3/02F42D1/00
CPCF42D3/02F42D1/00
Inventor 蒙云琪操鹏陈占吴剑峰陈仕奇邬强李小贝张兆龙
Owner 中铁四院集团工程建设有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com