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

Method for constructing special shaped deepwater cofferdams on steep rocky riverbeds

A construction method and technology of cofferdam, applied in the direction of infrastructure engineering, construction, etc., to achieve the effect of high construction feasibility and low construction cost

Active Publication Date: 2011-04-20
ANHUI HIGHWAY BRIDGE ENG CO LTD
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the constraints of bridge line position, bridge type, span, cost and other factors, the above situation is sometimes unavoidable, that is, sometimes it is unavoidable to set up cofferdams on steep slopes or rocky riverbeds
And there is no reliable construction method in the prior art that can carry out construction under this condition

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
  • Method for constructing special shaped deepwater cofferdams on steep rocky riverbeds
  • Method for constructing special shaped deepwater cofferdams on steep rocky riverbeds
  • Method for constructing special shaped deepwater cofferdams on steep rocky riverbeds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] This example is in figure 1 The environment shown requires the construction of bridge foundations 5, figure 1 Among them, the riverbed below the water level 2 is a rocky riverbed, that is, the rock mass 3. The rock quality of the rock mass 3 is relatively hard, and the rock surface of the riverbed surface 1 has a relatively large slope, so it is not suitable for slotting or other methods to fix the enclosure. Weir wall6.

[0023] see figure 2 and image 3 , the cofferdam in the present embodiment is constructed according to the following steps:

[0024] 1. The prefabricated cofferdam wall 6 is provided with grouting pipes 7 vertically and vertically penetrating through the cofferdam wall 6, and the grouting pipes 7 are spaced and evenly arranged in the cofferdam wall 6;

[0025] 2. Sink the cofferdam wall 6 to the river bed, keep the top of the grouting pipe 7 exposed above the water level 2, and use the grouting pipe 7 to flush the river bed with jet water. The fl...

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 method for constructing special shaped deepwater cofferdams on steep rocky riverbeds. The method is characterized by comprising the following steps: preferably selecting a prefabricated cofferdam wall, and arranging a grouting pipe which penetrates through the cofferdam wall up and down along the vertical direction in the cofferdam wall; then sinking the cofferdam wall on the riverbed, exposing the top end of the pipe above the water level, and using the grouting pipe to jet water to wash the riverbed; finally, filling the two sides of the cofferdam wall with broken stones, pouring cement mortar into the bottom of the cofferdam wall and the broken stones via the grouting pipe, draining the water in the cofferdam after the cement mortar and the broken stones are bonded and achieve the strength, and excavating a foundation pit in the absence of water, thus completing construction of bridge foundation. The method can be used for pretreating the riverbed without using equipment and is especially suitable for construction of deepwater cofferdams.

Description

technical field [0001] The invention relates to civil engineering construction, in particular to a cofferdam construction method and a special device during construction. Background technique [0002] At present, when deep-water cofferdams are constructed on rocky riverbeds, due to the hard rock formations, the construction of the cofferdams is quite difficult, such as implantation, sinking into the soil, fixing, and bottom sealing. Therefore, in engineering design, the bridge foundation is usually avoided as far as possible from places where unfavorable geological, topographical, and hydrological conditions coexist, such as deep water, steep slopes, and rocky riverbeds. However, due to the constraints of bridge alignment, bridge type, span, cost and other factors, the above situation is sometimes unavoidable, that is, sometimes it is unavoidable to set cofferdams on steep slopes or rocky riverbeds. And there is no reliable construction method in the prior art that can carr...

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): E02D19/04
Inventor 戴良军崔林钊陈刚陈雷
Owner ANHUI HIGHWAY BRIDGE ENG CO LTD
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