【作者】 李斌； 王舟； 罗培聚； 陈富强；

【Author】 LI Bin, WANG Zhou, LUO Pei-ju, CHEN Fu-qiang ( Guilin Highway Administration; Guilin Construction Quality Monitoring Station; Guilin Southern Construction Supervision Corporation Ltd. 541004; Civil Engineering Department of Chongqing Jiaotong University 400074)

【机构】 桂林公路局； 桂林市建设工程质量监督站； 桂林南方建设监理有限责任公司； 重庆交通大学土木工程学院；

【摘要】 利用自编程序ASP1．0,对滑坡的物理力学参数、桩截面型式及截面尺寸等对桩的锚深、内力、配筋量的影响进行了定量计算分析,结果表明:滑床土的内摩擦角(?)对桩锚深、内力的影响较大,桩锚深、内力和配筋量对(?)变化很敏感;桩锚深、内力和配筋量对滑床土粘聚力C的变化相对不敏感;桩锚深对地基系数m的变化相对不敏感,而内力及配筋则受m影响较大; 滑坡的推力对桩的锚深、内力及配筋影响显著,近似成线性关系,当过大的锚深导致施工困难时,单靠增大桩宽的方法来减小锚深是不经济的,而应通过调整桩距、削坡、改变桩截面等综合措施予以实现;同一滑坡条件下,空心抗滑桩一般是最经济的桩型。所得结果对抗滑桩设计时合理把握参数的取值并选用适当的桩型有一定的实际意义。更多还原

【Abstract】 quantitative analysis of susceptibility of design result of slide-resistant pile to its design parameters is made with self-developed software ASP1.0. The analysis shows: the anchoring depth, internal forces and reinforcement of slide-resistant pile are in approximate direct ratio with thrust of landslide, and when anchoring depth is too deep due to great thrust, the treatment of landslide should be with comprehensive measures of adjustment of pile spacing, pile section and slope cutting instead of enlargement of pile width only; the anchoring depth, internal forces and reinforcement of slide-resistant pile are greatly influenced by internal friction angle (?) of soil in landslide bedding and are susceptible to the variation of (?); the anchoring depth, internal forces and reinforcement of slide-resistant pile are not susceptible to variation of cohesive force c of soil in landslide bedding; the anchoring depth of slide-resistant pile is not susceptible to variation of foundation modulus m , while internal forces and reinforcement of slide-resistant pile is; piles with annular section are the most economical among piles with rectangular section, round and annular section under the same condition. The above findings have practical significance for the reasonable choice of design parameters and pile types for landslide treatment.更多还原