Construction method for rapid demolition and recycling of double-wall steel cofferdam
A double-wall steel cofferdam and steel cofferdam technology, applied in infrastructure engineering, construction, etc., can solve the problems of high construction investment cost, low recycling rate, time-consuming and labor-intensive, etc., to shorten the construction period, improve the turnover rate, The effect of improving work efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0038] A double-wall steel cofferdam rapid demolition turnover construction method includes the following steps:
[0039] S1. Processing and production of double-wall steel cofferdam: Carry out blanking and production on the shore, and then use a crane to lift the prepared double-wall steel cofferdam into pieces on the floating boat for use. The pontoon of the wall steel cofferdam section is dragged to the side of the assembly and positioning ship, and is assembled by the car crane on the assembly platform according to the section, and then inspected, corrected, and welded. The double-wall steel cofferdam is divided into three to four layers according to the design. , according to the on-site processing and transportation conditions and the lifting capacity of the on-site assembly, there are two symmetrical blocks on each side of each layer, and several blocks on each layer;
[0040] S2. Assembly and lowering of double-walled steel cofferdams: relying on the pile foundation st...
Embodiment 2
[0044] Refer to 1-5. This embodiment provides a project example. The Huixin Avenue Bridge across the Dongjiang River is a large-scale continuous rigid frame cross-river bridge in Huizhou City, Guangdong Province. The 11#-21# pier caps are all in the water, and the foundation adopts bearing Platform-connected bored pile foundation. The cap adopts a separated cap, and the 11#-13# pier and the 19#-21 pier are the parts of the approach bridge. Each pier has 4 caps, and the structural size of a single cap is 6.05m*6.45m*2m; Four bored piles of φ130cm are arranged under the platform. Piers 14# and 18# are the transitional piers of the main bridge, and each pier has 2 caps, and the size of a single cap is 6.75*12.5*3m; 6 bored piles of φ150cm are installed under each cap. 15#-17# pier is the main pier, and each pier is equipped with 2 caps, and the size of a single cap is 9*14*4m; each cap is equipped with 6 φ200cm bored piles. It is designed as a double-wall steel cofferdam struct...
Embodiment 3
[0050] Based on Example 2, this embodiment provides a double-wall steel cofferdam design. The double-wall steel cofferdam of Huizhou Huixin Avenue Bridge across the Dongjiang River is divided into main pier 15#-17#, side pier 14#, 18# and approach pier 11# -13#, 19#-21# three structural forms, the design principle of the steel cofferdam is the same, according to the embedding depth of the caps, the 19# pier cap steel cofferdam which can be turned over is selected as an example.
[0051] The steel cofferdam structure of the 19# pier cap of this bridge is designed as a double-wall steel cofferdam. The wall thickness is 1.5m.
[0052] Considering that the casing cofferdam is deep such as mud and the water depth is relatively large under the most unfavorable working conditions, the inner and outer wall panels of the casing are made of 8mm thick steel plates, the steel box is welded by 1.2cm thick steel plates, and the vertical ribs are 120*80*12 Angle steel with unequal limbs is ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More