某建筑边坡支护设计之一

摘要
本次设计为xx市某建筑边坡支护设计一期工程，主要是1#楼及幼儿园前后的边坡支护，根据规划要求及地形情况形成的边坡高度为（3～15）m，其中A～C、J～K及O～P段采用岩石锚喷支护，D～G段采用扶壁式挡墙，H～J、L～O段采用预应力锚索加格构梁的支护。在设计过程中，对于岩石锚喷支护和预应力锚索加格构梁的支护，首先根据工程地质情况，选用平面滑动法对滑坡推力进行分析计算，然后对边坡进行稳定性评价，下一步则是拟定锚杆、锚索间距，选择锚杆（索）类型，计算锚杆及预应力锚索长度，最后根据构造进行面层设计和锚头设计，采取格构梁的要先确定格构梁尺寸，然后用倒梁法进行内力计算，按照《混凝土结构设计规范》对格构梁进行配筋。对于扶壁式挡墙支护，首先根据构造要求初拟墙身截面尺寸，然后进行土压力计算，下一步则是抗倾覆稳定验算、抗滑移稳定验算、地基承载力验算，直到这些要求满足之后再进行墙身内力计算和配筋。

关键词：平面滑动法，稳定性评价，扶壁式挡土墙，预应力锚索，岩石锚喷支护，格构梁

Construction of a supporting design of the slope
Abstract
The design for construction of a slope in Guiyang City supporting design a project, the main floor is the No. 1 and kindergarten before and after the slope support, according to requirements and terrain conditions for the formation of a high degree of slope (3 ~ 15) m, One A ~ C, J ~ K and O ~ P rock anchor of the use of shotcrete support, D ~ G of a retaining wall supporting the wall, H ~ J, L ~ O of the use of prestressed cable-beam structure Jiage Guarding. In the design process, the anchor of rock and spray support prestressed cable Jiage beam support structure, the first According to the geological conditions, the choice of plane sliding thrust of the analysis of the landslide, then the slope stability assessment, The next step is the development of anchor, the anchor space, select the bolt (Cable) types, terms and prestressed anchor bolt length, according to the final structure of the design and conduct of the first anchor design, to take lattice beams make sure Lattice beam size, then inverted beam method for calculating internal forces, in accordance with "concrete structure design specifications," the lattice beams reinforced. For supporting the retaining wall supporting wall, first constructed in accordance with requirements to be the beginning of the walls of section size and then proceed to earth pressure, the next step is checked against overturning stability, anti-slip stability checked, the foundation bearing capacity-counting, until these demands Meet again after the calculation of internal forces and reinforced walls.
Key words: plane sliding, stability evaluation, the retaining wall supporting the wall, prestressed cable, rock anchor jet support, lattice bea.

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