Q_(2,3)黄土状土极限侧阻力及端阻力标准值探讨——以龙山发电厂试桩工程为例  

Study on the Standard Values of Ultimate Side Friction and Tip Resistance of Pile in Loess Soil——Taking Loading Tests in Longshan Electric Power Plant Project as the Example

作　　者：谷晓阳[1] 申红霞[1] 

机构地区：[1]河北省电力勘测设计研究院,石家庄050031

出　　处：《工程勘察》2006年第11期32-35,共4页Geotechnical Investigation & Surveying

摘　　要：极限侧阻力、端阻力标准值直接影响着单桩承载力的大小及桩长、桩径等参数的设计,其值可通过《建筑桩基技术规范》查表获取,也可通过试桩实测取得。在龙山发电厂工程试桩中,发现二者有很大出入。本文从试桩资料入手,针对Q2,3黄土状土,详细分析了桩的荷载传递特性及承载性状,发现了现行规范的缺陷,为Q2,3黄土状土分布区的桩设计提供了可借鉴的经验。The standard values of the ultimate side friction and the tip resistance of pile affect directly the bearing capacity of a pile and the design for its length and diameter. The values can be gained by looking up data from ＂Technical Code for Building Pile Foundation＂ and they can also be gained from field loading tests. In the loading tests of Longshan electric power plant project, there are great difference between them. The load transmission characteristics and bearing behaviors of pile in loess soil Q2,3 are analyzed through the loading test data and the limitations of the current codes are found, which supply the benefited experience for the pile design in losses soil Q2,3.

关 键 词：桩的极限侧阻力及端阻力 Q2 3黄土状土承载性状 桩的长径比 

分 类 号：TU473.11[建筑科学—结构工程] TU444[建筑科学—土工工程]