Preloading water tank and technology of huge open-frame girder steel tube full support

Abstract

The invention relates to the technical field of building construction, and discloses a water tank preloading technology of a huge open-frame girder steel tube full support. The water tank preloading technology includes the following operation processes of full support erection, preloading area selection, preloading load determination, water tank erection, monitoring point arrangement, monitoring instrument setting, water storage gradation loading, preloading monitoring, settlement stabilization, drainage and unloading, support template adjustment and next procedure executing. By using simple equipment which is always available at the site and self-configuring a water tank, the flexibility, simpleness and convenience are achieved, the working efficiency is high, and compared with a traditional preloading method, the construction period can be shortened by 1/3 or above; and the processing cost is low, operation is easy and convenient, the cost is saved, compared with adopting a precast reinforced concrete block preloading method, the investment can be saved by 70-80%, compared with sandbag stacking preloading, the investment is saved by 30-40%, and compared with site reinforced material preloading, the investment can be saved by 20-30%, and the preloading method has the advantages of less construction equipment, high construction efficiency, local material using, easy manufacturing, environment-friendly construction, reasonable actual stress state in the simulated pouring process, and the like.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a pre-pressurized water tank of a giant empty-web beam steel pipe full support. Background technique [0002] During the concrete pouring process of long-span giant vierendeel beams, the stability and deformation of the bracket directly affect the safety and quality of vierendeel beam concrete pouring. [0003] The purpose of bracket preloading is to test the safety of the bracket and collect construction settlement data. After preloading, the strength, stiffness and safety of the bracket can be checked to ensure construction safety; the influence of non-elastic deformation of the bracket can be eliminated, and elastic deformation data can be mastered , so that the setting of the pre-camber is reasonable, which is beneficial to the linear control of the vierendeel beam members. The pre-compression load of the existing support is usually pre-compressed by prefabricat...

AI Technical Summary

Problems solved by technology

[0003] The purpose of bracket preloading is to test the safety of the bracket and collect construction settlement data. After preloading, the strength, stiffness and safety of the bracket can be checked to ensure construction safety; the influence of non-elastic deformation of the bracket can be eliminated, and elastic deformation data can be mastered , so that the setting of the pre-camber is reasonable, which is beneficial to the linear control of the vierendeel beam members. The pre-compression load of the existing support is usually pre-compressed by prefabricated reinforced concrete blocks, pre-compressed by water bags, pre-compacted by stacking sandbags, or pre-compacted by on-site steel materials, etc. Method, the use of prefabricated reinforced concrete block preloading needs to use the crane to place the prefabricated reinforced concrete block preloaded on the bracket in batches. During the placement process, the prefabricated reinforced concrete block preloaded due to the different weight and area, resulting in prefabricated reinforced concrete block preloading discomfort Evenly arranged on the bracket, resulting in uneven preloading force of the bracket, local preloading overload phenomenon occurs, water bag preloading also requires handling equipment to stack it on the bracket, and the water bag preloading method is easy to cause the bracket The eccentric load during preloading affects the accuracy of the test. Preloading with on-site steel reinforcement materials requires a lot of materials and manpower. In summary, these methods require a lot of labor and lifting equipment, and the waste of materials is serious. Construction It takes a long time, not only labor-intensive and time-consuming, but also has certain restrictions on the pre-pressing site

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