The Application of Double Load Cells Self-Balanced Method on the Static Load Test of Long Post-grouting Pile with Great Diameter

The paper introduces the main test apparatus and keys of double load cells self-balanced method used in the static load test of one Huangpu river bridge with super span. The test results show that the double load cells self-balanced method has obvious advantages on the test for the long piles with great diameter injected cement from the bottom (post-grouting pile). This technology can solve the problem that the traditional static load test can´t solve, providing a way to solve the problem for practical application of engineering, and it has great application prospect in bridge piles.