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木谷坊做为一种新型结构不同于常规工程设计 ,世界上虽出现了此类景观坝体 ,但没有适合现代技术水平的设计方法。为此进行木谷坊水平荷载试验 ,研究木谷坊稳定计算方法。木谷坊采用Φ =10～ 15cm ,L =4m间伐杉木叠加而成 ,层间用Φ =16mm螺栓固定 ,木间堵石。荷载试验采用千斤顶及测力计 ,测定每次加荷后坝体水平位移 ,计算作用坝底的水平力、力矩与位移的关系及坝体稳定性。试验结果表明 :逆转稳定系数为 1 82 >1 5 0 ;摩擦因数为 1 78>1 2 0 ;剪切变形稳定系数为 1 5 0 >1 2 0 ;地基支撑力 196kN/m2 >垂直地基应力 6 8 1kN/m2 ,满足技术设计要求。从水平荷载试验结果分析 ,为充分发挥木谷坊的功能 ,应采用在坝上游允许有拉伸应力的设计方法
Mu Gu Fang as a new type of structure is different from the conventional engineering design, although there are such landscape dam in the world, but there is no design method suitable for modern technology. To carry out the horizontal load test of Kutani Square and study the stable calculation method of Kutani Square. Mu Gu Fang using Φ = 10 ~ 15cm, L = 4m between stacked deforested, with Φ = 16mm bolt between the layers, stone block in the wood. The load test uses jack and dynamometer to measure the horizontal displacement of the dam after each loading, and calculates the horizontal force acting on the bottom of the dam, the relationship between torque and displacement, and the stability of the dam. The experimental results show that the reversal stability coefficient is 1 82> 150; the friction coefficient is 1 78> 120; the shear deformation stability coefficient is 1 5 0> 1 2 0; the foundation support force is 196 kN / m2; and the vertical foundation stress is 6 8 1kN / m2, to meet the technical design requirements. From the analysis of horizontal load test results, in order to give full play to the function of wood valley, should be used in the upper reaches of the dam to allow the design of tensile stress