Vertical compression resistance and static load test method of 4000t class pile foundation

Abstract

The invention discloses a vertical compression resistance and static load test method of a 4000 t class pile foundation. The vertical compression resistance and static load test method comprises the eight steps that a deep liquefaction layer isolation system is mounted; test pile and anchor pile construction is conducted; a loading and measuring device is mounted; a counter-force device is mounted; a pile-loading block is mounted; loading and unloading are conducted; a test result is analyzed; and a test device is reversely used. The vertical compression resistance and static load test methodis suitable for the conditions of the water and land environment, deep liquefaction layer isolation, 4000t class static pressure load, and a plurality of test piles, and the vertical compression resistance and static load test method has the advantages of being safe and reliable in force, wide in application range, flexible in loading method, and small dependence on construction equipment.

Description

technical field [0001] The present invention relates to the field of static load tests for vertical uplift resistance of pile foundations, in particular to a test pile for a single project in Southeast Asia and the South Asian subcontinent including water area and land area environment, deep liquefied layer isolation, 4000t-level static pressure load, and a relatively small number of test piles. Static load test method for vertical uplift of pile foundation under multiple conditions. Background technique [0002] As the scale of infrastructure construction in overseas markets continues to increase, bridge construction is changing with each passing day, and long-span and heavy-duty bridges continue to emerge, which provides greater opportunities for my country's infrastructure design and construction companies, but also brings challenges. Southeast Asia and parts of the South Asian subcontinent have complex natural conditions, deep bedrock burial, high seismic fortification i...

AI Technical Summary

Problems solved by technology

Its advantages are: the load-bearing platform is easy to set up, suitable for different loads, and can be randomly sampled and tested for engineering piles; its disadvantages are: poor applicability of test piles in water areas, high requirements for foundation bearing capacity when the load is large, difficult organization of materials and materials, piled loads And the transition process requires the cooperation of equipment, and the efficiency is low

Its advantages are: suitable for test piles in water areas, fast installation and disassembly, and convenient transition, especially for large-tonnage piles; its disadvantages are: the bearing capacity of anchor piles is not easy to control, and the cost of special anchor piles for land test piles is high. The tonnage test pile anchor pile connection device bears complex force

The disadvantages are: the structure of the conventional reaction force device is complex, inconvenient to assemble and disassemble, the safety of the joint is poor, the turnover efficiency of the test device is low, and the economy is not good

[0008] At present, the commonly used pile foundation vertical compressive static load test method cannot be used for the vertical compressive static load test of 4000t pile foundation

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