Construction Technology of Integral Water Tank Preloading

Abstract

The invention discloses an integral water tank preloading construction process, which comprises the following steps of (1) support system assembly; (2) bottom die installation; (3) preloading water tank assembly; (4) gradation loading and unloading; (5) support observation; (6) support evaluation and adjustment. The invention also provides an integral preloading water tank, which comprises a water tank framework, water bags, a water tank bottom plate, surrounding side walls and a plurality of partition plates, wherein the water tank framework is built by using Bailey trestles; the water bags are arranged in the center of the water tank framework; the partition plates are arranged in the water tank framework; a tarpaulin is paved on the water tank bottom plate; the partition plates are located between the adjacent two water bags. According to the integral water tank preloading construction process disclosed by the invention, full-span large-area preloading of super-wide concrete box girders in bridge construction is realized, and the safe state of a support can be more accurately reflected. Moreover, the operation is simple, the material cost is low, the labor cost is low, and the required construction period is short. The area of preloading box girders can be adjusted according to project needs, and the defects of the traditional box girder preloading technology are made up.

Description

technical field [0001] The invention relates to the technical field of concrete bridge engineering, in particular to an integral water tank preloading construction process. Background technique [0002] In the past and current bridge construction, the conventional construction methods of concrete box girder construction include sandbag preloading method, water bag preloading method, and prefabricated block preloading method. These box girder preloading construction process costs are relatively high and labor intensity is high. , The construction period is long, in order to meet the construction quality and safety, while taking into account the cost and work efficiency, it is necessary to create a new pre-pressing construction process, so we choose "a new type of integral pre-pressing process" as an innovative topic, forming a A complete and reliable set of construction technology is used to guide the construction of similar bridges. Contents of the invention [0003] The ...

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Problems solved by technology

[0002] In the past and current bridge construction, the conventional construction methods of concrete box girder construction include sandbag preloading method, water bag preloading method, and prefabricated block preloading method. These box girder preloading construction process costs are relatively high and labor intensity is high. , The construction period is long, in order to meet the construction quality and safety, while taking into account the cost and work efficiency, it is necessary to create a new pre-pressing construction process, so we choose "a new type of integral pre-pressing process" as an innovative topic, forming a A complete and reliable set of construction techniques is used to guide the construction of similar bridges

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