Construction method of arch structure in-situ surcharge load test

Abstract

The invention provides a construction method of an arch structure performance in-situ surcharge load test. According to the construction method of the arch structure performance in-situ surcharge loadtest, an existing crawler crane superlift counterweight is adopted for replacing traditional bagged iron sand or bagged sand, the surcharge load mass is little, the surcharge load height is reduced,the counterweight contact interface levelness and flatness are easy to control compared with those of the traditional bagged iron sand or bagged sand, secondly, the cushion levelness control precisionof a surcharge load base is high compared with that of a conventional bagged iron sand or bagged sand surcharge load base, the stiffness is high, and the safety of test operation is improved. Meanwhile, on the basis of guaranteeing safe construction, the surcharge load counterweight can be recovered to save resources. By contrast, the counterweight mass is reduced, the transportation cost is saved, and surcharge load duration is shortened, so that the construction cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of test loading, and in particular relates to a construction method for an in-situ surcharge test of the performance of a concrete arch structure. Background technique [0002] Bagged iron sand or bagged sand surcharge is currently the most commonly used surcharge construction method for simulating the impact of soil pressure on the performance of underground concrete structures. In order to realize the loading purposes of various test stages by using the traditional in-situ stacking method of the structure, it is necessary to increase the volume of bagged iron sand or sand, that is, to increase the stacking height on the basis of the same loading interface. If the arched concrete structure is loaded in situ, the structure itself has a certain height from the ground, and the traditional stacking method obviously increases the difficulty of construction. Secondly, the arched surcharged foundation platform is...

AI Technical Summary

Problems solved by technology

If the arched concrete structure is stacked in situ, the structure itself has a certain height from the ground, and the traditional stacking method obviously increases the difficulty of construction

Secondly, arched surcharged foundation platforms are usually stacked with bagged iron sand or bagged sand. It is difficult to control the levelness and flatness of the piled foundation interface, and the small stiffness of the surcharged foundation is prone to instability and dumping, which increases the risk of the test.

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