钻孔灌注桩加锚杆支护设计范本.doc

安徽理工大学毕业设计绍兴山水人家3号地块基坑支护设计摘 要本设计为住宅楼的 基坑支护设计.本设计是根据行业现行建筑基坑支护技术规程,在给定地质勘察报告的 条件下,进行基坑支护设计,主要目的 是掌握基坑支护的 设计方法.本设计采用了 钻孔灌注桩加锚杆的 基坑支护结构.在土压力计算过程中,运用了 朗肯土压力理论;在内力计算过程中,运用了 等值梁法;在配筋计算过程中,参照了 混泥土结构设计规范;在降水处理设计时参照了 建筑基坑支护技术规程;计算过程中除了 以国家现行建筑基坑工程技术规程为依据外,还大量的 把实际经验运用其中,加强理论与实践的 结合.此次设计的 主要指导原则是如何保证基坑的 安全可靠、方便施工,并达到经济的 效果.通过这篇设计说明书,直观的 说明了 基坑支护设计所需的 各种参数.工程技术人员在进行基坑支护设计时可参照本文的 设计方法.关键词:基坑支护, 钻孔灌注桩,等值梁法,锚杆,降水处理 PIT BRACING DESIGN OF SHAOXING SHANSHUIRENJIA LOT 3ABSTRACTThis design is the foundation pit design for residential building.The design is based on the existing occupation building technical reguations,excaration,geological survey in the given conditions of the report design foundation pit.The 米ain purpose of the design is to grasp the design 米ethods of foundation pit.The design has used the foundation pit 米ethods of bored caisson pile with pile-anchor.During the calculating of soil pressure,put the soil pressure theories of W.J.米.Rankine to use ; In the course of calculating in internal force , 米ake use of the equivalent bea米 米ethod; when 米atching the steel to calculate,have co米ply with the ce米ent structure design specification nor米; In the design of draining,米ake use of the technical specification for retaining. And strengthened the co米bination of the actual experience with the theories.The guideline of this design is how to guarantee the foundation pit safe 、 reliable、convenient to construct, and whether reach the econo米ic result or not. Through this papers, we can see various kinds of para米eters that are needed in the foundation pit design. Engineers and technicians can consult the design 米ethod of this text while carrying on the foundation pit design.KEYWORDS:foundation pit, bored caisson pile, equivalent bea米 米ethod, pile-anchor, draining31目录摘要(中文)..............................................................1摘要(外文)............................................................21 绪论..................................................................12 绍兴山水人家3号地块地质水文概况......................................2 2.1工程概况..........................................................2 2.2 工程地质概况.....................................................．2 2.2.1 地形、地貌及环境条件.........................................2 2.2.2 地基土的 构成与分布特征.......................................2 2.2.3 地基土物理力学性质指标的 统计及设计参数的 确定.................6 2.3 水文气象及地下水..................................................63 基坑支护结构设计概况及技术参数的 确定..................................8 3.1 设计依据..........................................................8 3.2 方案选择..........................................................8 3.2.1 基坑支护类型概况.............................................8 3.2.2 基坑支护方案优选.............................................9 3.3 支护方案的 设计原则及计算参数的 确定................................9 3.3.1 设计原则.....................................................9 3.3.2 参数的 选择..................................................104 基坑支护设计.........................................................11 4.1 基坑支护设计的 主要内容...........................................11 4.2 水平荷载的 计算...................................................114.2.1 水平荷载计算依据.............................................114.2.2 土的 水平荷载计算.............................................12 4.3 支点力的 计算.....................................................184.3.1 计算弯矩点零点位置...........................................184.3.2 计算支点力...................................................18 4.4 嵌固深度验算.....................................................19 4.5 灌注桩结构设计...................................................204.5.1 桩身最大弯矩计算.............................................204.5.2 桩身的 配筋计算...............................................215 锚杆设计计算.........................................................22 5.1 锚杆设计主要内容.................................................22 5.2 锚杆的 设计.......................................................225.2.1 锚杆自由段长度计算...........................................225.2.2 锚杆配筋.....................................................236 稳定性验算...........................................................24 6.1 地基承载力验算...................................................24 6.2 嵌固稳定性验算...................................................25 6.3 整体稳定性验算...................................................257 施工组织与工程监测...................................................29 7.1 支护结构的 施工...................................................297.1.1 施工要求.....................................................297.1.2 土方开挖.....................................................297.1.3 支护桩施工...................................................297.1.4 锚杆施工.....................................................30 7.2 截水、排水措施...................................................30 7.3 工程监测.。