Construction method for integrally and synchronously arranging multiple layers of large-tonnage inner supports in cofferdam

A construction method and large-tonnage technology, applied in infrastructure engineering, construction, etc., can solve problems such as long time consumption, and achieve the effects of shortening construction time, setting reasonable construction steps, and precise positioning

Active Publication Date: 2022-04-05
CHINA RAILWAY GUANGZHOU ENG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Regarding the related technologies mentioned above, the applicant believes that there are the following defects: During the construction of the support system, it is necessary to install corbels of different layers and support structures of different layers in layers, the construction process takes a long time, and there is room for improvement

Method used

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  • Construction method for integrally and synchronously arranging multiple layers of large-tonnage inner supports in cofferdam
  • Construction method for integrally and synchronously arranging multiple layers of large-tonnage inner supports in cofferdam
  • Construction method for integrally and synchronously arranging multiple layers of large-tonnage inner supports in cofferdam

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Embodiment Construction

[0048] The following is attached Figure 1-8 The application is described in further detail.

[0049] The embodiment of the present application discloses a construction method for the overall synchronous deployment of multi-layer and large-tonnage inner supports in the cofferdam, which is used for the arrangement of the inner support system inside the cofferdam of steel pipe piles 3 .

[0050] refer to figure 1 , the internal support system includes three layers of internal support structures arranged in sequence from top to bottom, and the order from top to bottom is the first internal support structure 11 , the second internal support structure 12 and the third internal support structure 13 .

[0051] combine figure 1 with figure 2 , the inner support structure includes a rectangular inner purlin 21, a diagonal brace 22 fixed on the inner side of the inner purlin 21, a cross brace 25 fixed on the inner side of the inner purlin 21, and a movable beam 23 arranged around th...

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Abstract

The invention discloses a construction method for integrally and synchronously arranging multiple layers of large-tonnage inner supports in a cofferdam, and relates to the field of cofferdam construction.The construction method comprises the following steps that S1, after the cofferdam is closed, soil is taken till the ground in the cofferdam descends to the position below a third inner support structure; s2, three layers of brackets are mounted on the inner side wall of the steel pipe pile; s3, a limiting structure is installed on the inner side wall of the steel pipe pile, and the limiting structure is used for limiting the inner supporting structure reaching the designed elevation to continue to move upwards; s4, three layers of inner supporting structures are placed on the corbels located on the bottom layer, and all the layers of inner supporting structures are fixed into a whole; s5, a hanging system used for hanging the three-layer inner supporting structure is arranged at the top end of the cofferdam; and S6, a linear driving piece in the limiting structure is started, so that a limiting rod at the output end of the linear driving piece extends out of the bracket. The construction method has the advantages that the construction steps are reasonably arranged, the construction time is shortened, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the field of cofferdam construction, in particular to a construction method for integral synchronous deployment of multi-layer and large-tonnage inner supports in a cofferdam. Background technique [0002] At present, the steel sheet pile cofferdam is a very advantageous deep-water foundation cofferdam construction technology, which is widely used in the construction of passenger dedicated lines and high-speed railway bridges. [0003] In the related technology, the construction method of the steel pipe pile cofferdam is as follows: measuring and setting out, inserting and driving steel pipe piles and closing piles outside the purlin on the top floor; inserting and driving steel pipe piles for positioning at the four corners of the cap and welding the top corbel platform , assemble and weld the top support structure on the top corbel platform; weld the middle corbel platform on the positioning steel pipe piles, and splice and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/04
Inventor 邓晓峰陈永光周胜民孙广辉曹科程朝龙容敏段继耀王超张平
Owner CHINA RAILWAY GUANGZHOU ENG GRP CO LTD
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