Pile large-tonnage stacking double-layer secondary beam sandwich type structure weight platform stacking method

Abstract

The invention belongs to the field of large-diameter high-bearing-capacity pile detection, and particularly relates to a pile large-tonnage stacking double-layer secondary beam sandwich type structureweight platform stacking method. The pile large-tonnage stacking double-layer secondary beam sandwich type structure weight platform stacking method comprises the following steps that S100, test sitetreatment is carried out; S200, stacking platform buttresses and main beam buttresses are erected; S300, a loading device is arranged; S400, a main beam is erected; S500, a lower-layer secondary beamis erected; S600, an interlayer is placed on the lower-layer secondary beam; S700, an upper-layer secondary beam platform is erected; and S800, a balancing weight is placed. According to the pile large-tonnage stacking double-layer secondary beam sandwich type structure weight platform stacking method, the situation that the secondary beam is damaged and deformed due to local stress concentration, and consequently a test is affected is avoided; and only the main beam is a steel structure beam, the secondary beam is composed of I-shaped steel with small mass, the secondary beam is convenient and fast to use, and the cost is reduced.

Description

technical field [0001] The invention belongs to the field of large-diameter and high-bearing-capacity foundation pile detection, in particular to a large-tonnage foundation pile pile-loading double-layer beam "sandwich" type structure ballast platform pileup method. Background technique [0002] In recent years, the foundations of many important buildings (structures) in the construction field adopt large-diameter pile foundations, so the bearing capacity of foundation piles is getting higher and higher. In order to ensure the safety of the building, the bearing capacity of foundation piles must be tested and evaluated. The load test is a test method for testing the bearing capacity of foundation piles. Generally, the ultimate load exceeding 15000kN is called a large tonnage load test. This kind of large-tonnage load test requires strict control to ensure safety from the production of pile caps, the treatment of soil around piles, and the design and assembly of the overall r...

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