Bridge thin-wall hollow-pier chain block hoisting operation platform and construction method thereof
A thin-walled hollow pier and chain hoist technology, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of low safety, inconvenient operation, low efficiency, etc., and achieve improved safety and low labor intensity. , the effect of fast construction
Active Publication Date: 2012-12-05
CHINA RAILWAY NO 5 ENG GRP +1
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a chain hoist lifting operation platform and its construction method for thin-walled hollow piers of bridges, so as to overcome the disadvantages of inconvenient operation, low efficiency and low safety in the prior art.
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Embodiment Construction
[0013] Embodiment of the present invention: the structure of the chain hoist lifting operation platform is as follows: the chain hoist lifting operation platform 1 is composed of a base 1-4, a top frame 1-1, an intermediate bracket 1-2 and a platform chain hoist 1-3 .
[0014] The base 1-4 includes the base inner frame 1-4-1, the base outer frame 1-4-2, and the I-beam of the base outer frame 1-4-2 is provided with a steel pipe hole seat 1-4-3 with a latch; The outer I-beam of the top frame 1-1 is provided with a steel pipe hole seat with a latch.
[0015] The inner frame 1-4-1 of the base surrounds the pier body 7, and the net distance from the pier body 7 is 5cm. The steel pipe hole seat 1-4-3 welded on the I-beam of the outer frame 1-4-2 of the base is used for fixing and supporting the upper intermediate support 1-2, that is, the scaffolding system.
[0016] Base 1-4 I-beam adopts No. 18.
[0017] The upward movement of the platform 1 is achieved by hanging the platform ...
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The invention discloses a freeway bridge thin-wall hollow-pier chain block hoisting operation platform and a construction method thereof. The chain block hoisting operation platform (1) comprises a base (1-4), an upper-frame (1-1), a middle support (1-2) and a platform chain block (1-3), wherein the base (1-4) is connected with the middle support (1-2), and the middle support (1-2) is connected with the upper-frame (1-1); a VC (polyvinyl chloride) pipe (9) is arranged at the position which is 10cm below the top of a first formwork section (2) and 10cm below the top of a second formwork section (3) is provided with a PVC (polyvinyl chloride) pipe (9); steel bars are arranged in the PVC pipe; the upper surface of the chain block (1-3) is fixed on the steel bars in the PVC pipe, and the lower surface of the chain block (1-3) is connected with the base (1-4) through wire cables; and in the pier shaft (7) construction process, the PVC pipe is preburied in the pier shaft so as to reserve a plug hole for the supporting steel bars. The support operation platform system and the pier shaft formwork are separated, so that the operation efficiency and degree of safety are enhanced, and the invention is economical and reasonable.
Description
technical field [0001] The invention relates to a hand-chain hoist hoisting operation platform for a hollow pier of an expressway bridge and a construction method thereof. Background technique [0002] The rapid development of social economy has led to a gradual increase in the investment scale of high-grade highways and railway construction in mountainous areas. In areas where bridges cross deep valleys, the construction of high piers is inevitable. Existing high pier construction techniques are divided into three categories according to their methods: one is climbing formwork construction; the other is sliding formwork construction; the other is overturning formwork construction. Among the three types of high pier construction, climbing formwork and sliding formwork construction require relatively large dead weight and high requirements for operation and control. Therefore, in the current high pier construction, it is no longer the mainstream method. However, in the prev...
Claims
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IPC IPC(8): E01D21/00
Inventor 张廷坤税明东王生方雨田
Owner CHINA RAILWAY NO 5 ENG GRP