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Circular foundation pit reverse sliding formwork and construction method thereof

A sliding form and foundation pit technology, applied in the field of geotechnical engineering, can solve problems such as difficult construction, achieve high construction efficiency, ensure safety, and reduce production costs

Active Publication Date: 2021-11-12
CHINA RAILWAY WUJU GROUP ELECTRIC WORKS ENG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, at present, most of the sliding form construction is still mainly upward construction and climbing. For the reverse downward sliding form construction method, the construction is difficult and still No reasonable and reliable technical method can be used for reference

Method used

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  • Circular foundation pit reverse sliding formwork and construction method thereof
  • Circular foundation pit reverse sliding formwork and construction method thereof
  • Circular foundation pit reverse sliding formwork and construction method thereof

Examples

Experimental program
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Effect test

Embodiment

[0049] The reverse sliding form structure of the circular foundation pit in this embodiment is as follows: figure 1 , Figure 4 , Image 6 and Figure 8 As shown, the combined formwork structure is adopted, and the whole circle formwork structure is composed of 12 pieces of sliding formwork 1, and two pieces of formwork are symmetrically set at the demoulding position as the demoulding pieces, and the other formworks are divided into two groups, which are connected by bolts to form 5 The large fan combined formwork, the hinged parts of each fan are adjusted into a fixed ring structure through the tension screw; the lifting system is evenly arranged along the circumference of the crown beam of the foundation pit, and the lifting system is controlled by the hydraulic system, such as figure 2 and image 3 As shown, the lifting and lowering of the sliding mode are controlled.

[0050] Firstly, the wellhead crown beam lifting support and pre-buried installation are completed b...

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Abstract

The invention belongs to the technical field of geotechnical engineering, and particularly relates to a circular foundation pit reverse sliding formwork and a construction method thereof. The whole slip formwork is made of a steel plate with the thickness delta of 10 mm, a panel uses channel steel with the size of 80 * 43 * 5 mm as a stiffening rib, the weight of the whole formwork mainly controls a steel strand to ascend and descend through a cross-core oil cylinder so as to transmit the load of the formwork to a lifting support, the lifting support is fixed to a top beam of a foundation pit opening, and therefore the whole load of the formwork is borne by the top beam; center measurement utilizes plumb line measurement, horizontal displacement of a die body is observed, horizontal measurement utilizes a level tube principle, a transparent rubber tube is arranged on the die body, and water is filled and fixed on the die body for levelness observation. According to the circular foundation pit reverse sliding formwork and the construction method thereof, rapid construction of a circular reverse foundation pit can be achieved, compared with a traditional wood formwork, the circular reverse foundation pit formwork has the advantages of being efficient, rapid, attractive, economical and the like.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to an upside-down slip form for a circular foundation pit and a construction method thereof. Background technique [0002] The sliding form construction technology began to rise gradually in the 1920s. By the mid-1940s, the sliding form technology in foreign countries had been greatly developed. China began to use manual sliding form equipment for sliding formwork in the 1930s. Construction, by the end of the 1970s, China began to widely promote and apply slip-form construction technology. [0003] In recent years, with the continuous improvement of sliding form construction technology and sliding form equipment, sliding form technology has been rapidly promoted, including coal storage bunkers, chimneys and other structures in industrial buildings and civil high-rise and super high-rise buildings. The technology of slip form construction is also various...

Claims

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Application Information

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IPC IPC(8): E02D29/045E02D15/00
CPCE02D29/045E02D15/00E02D2250/0023
Inventor 龚振宇胡如成张文涛杜学才张细宝胡开富杨红霞李谷阳雷波向南
Owner CHINA RAILWAY WUJU GROUP ELECTRIC WORKS ENG CORP
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