Construction method of prefabricated railway bridge swivel
A construction method and bridge technology, applied in the direction of erecting/assembling bridges, bridges, and bridge construction, etc., to achieve the effects of reducing the difficulty of operation, stabilizing the support of the beam body, and improving the safety factor of operation.
Active Publication Date: 2020-07-28
科信宝(山东)技术转移有限公司
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Problems solved by technology
The construction technology of bridge rotation is divided into horizontal rotation method and vertical rotation method. The vertical rotation method is mainly used for rib arch bridges, and the horizontal rotation method is mainly used for girder bridges. Because the erection height of beam bridges constructed by the horizontal rotation method is generally the same as the final height after rotation level, so that some beam bridge construction still has high-altitude operations
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[0035] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.
[0036] Such as figure 1 As shown, a construction method for assembly railway bridge swivel is carried out according to the following steps:
[0037] Step 1: Pre-embed the jacking mechanism in the foundation, such as Figure 9 As shown, the jacking mechanism includes a jacking plate 302 embedded in the foundation, the upper surface of the jacking plate 302 is flush with the foundation surface, and the jacking plate 302 is provided with a jacking hole 303, the A supporting base plate 301 is provided below the lifting plate 302, and a jacking assembly is provided between the supporting base plate 301 and the lifting plate 302, and the jacking assembly lifts the lifting plate 302 upwards, and the jacking assembly includes at least Three hydraulic cylinders 304, the cylinder barrels of the hydraulic cylinders 304 are fixedly installed on the support base p...
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The invention discloses a fabricated railway bridge rotation construction method. The fabricated railway bridge rotation construction method comprises the steps of pre-embedding of a jacking mechanism, pouring of a bridge pier, pouring of a prefabricated beam body, mounting of a rotation mechanism and a lifting assisting mechanism, lifting and rotating of the prefabricated beam body, and the like.The fabricated railway bridge rotation construction method has the beneficial effects that construction of the prefabricated beam body is almost entirely converted from aerial operation to low-altitude operation on a foundation, the operation difficult is reduced, the safety factor of operation is greatly increased, after construction is finished, the assisting mechanism used for rotating and lifting can be removed and reused, the bridge pier plays a direct hard supporting role on the beam body, and the beam body is supported stably and reliably.
Description
technical field [0001] The invention relates to the technical field of railway bridge construction, in particular to an assembled railway bridge swivel construction method. Background technique [0002] With the rapid improvement of the country's economic level, the transportation industry has also developed vigorously. Due to the influence of some terrain or existing traffic facilities, bridge swivel construction technology has been more and more widely used in bridge construction. Bridge swivel construction refers to a construction method in which the bridge structure is formed at a non-design axis position and then put in place by swivel. Because the swivel construction method changes complex and highly technical high-altitude operations and water operations into land operations on the shore, it is not only safe and of good quality, but also does not interfere with traffic in the construction of navigable rivers or overpass bridges with frequent vehicles. , uninterrupte...
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IPC IPC(8): E01D21/08
CPCE01D21/08
Inventor 倪志军倪烨倪明倪原倪学成
Owner 科信宝(山东)技术转移有限公司