卵石地区自平衡深层荷载试验的应用

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摘要新疆乌鲁木齐地区卵石分布密集，地基承载力高。该地区在桩基础设计中往往忽略侧摩阻力，重视桩端阻力，传统深层荷载试验很难准确获得桩端土的力学性能。利用自平衡静载试验法能准确测试桩端阻力的优点，选用自平衡法进行试桩，测试桩端土的力学性能。根据现场试验结果，结合相关规范，确定了合理的端阻力标准值及桩端持力层承载力特征值，优化了设计方案，获得了卵石地区利用自平衡法进行深层荷载试验的工程经验，以供相似工程借鉴。

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	于清泉1
	龚维明2
	梁书亭2

关键词 ：土力学, 卵石, 自平衡, 深层荷载

Abstract：There are intensive distribution pebbles with high bearing capacity in Urumqi，Therefore，the lateral friction is usually ignored，but the tip resistance is attached importance during pile foundation design in the region. However，it is difficult to accurately obtain the mechanical properties of tip soil by traditional deep load test. The self-balance load test method was used according to the advantage of testing tip resistance. Based on the test results and the corresponding codes，the tip resistant normal value and the tip resistant characteristic number were obtained. Besides，the design project has been optimized according to the achievements of the test. The experience for similar projects of deep level plate load in pebble bed area using self-balance load method was obtained.

Key words： soil mechanics pebble bed self-balance deep level load

引用本文:

于清泉1，龚维明2，梁书亭2. 卵石地区自平衡深层荷载试验的应用[J]. 岩石力学与工程学报, 2010, 29(S2): 3847-3851.
YU Qingquan1，GONG Weiming2，LIANG Shuting2. APPLICATION OF SELF-BALANCE DEEP LEVEL LOAD TEST IN PEBBLE BED AREA. , 2010, 29(S2): 3847-3851.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2010/V29/IS2/3847

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