静载试验方法总结.doc

/html/2018/1125/6000022143001232.shtm .精品. /html/2019/0214/5230314210002011.shtm 静载试验方法 （1）加荷方式采用慢速维持荷载法；（2）加荷采用分级等量进行，每级加载增量为桩基承载力极限值的1/10，首级可加1/5；（3）测读桩顶沉降量的间隔时间：每级荷载施加后按第5、15、30、45、60min测读桩顶沉降量，以后每隔30min测读一次；（4）沉降相对稳定标准：每一小时内的桩顶沉降量不超过0.1mm，并连续出现两次（从分级荷载施加后第30min开始，按1.5h连续三次每30min的沉降观测值计算）；（5）加荷终止条件：当出现下列情况之一时即可终止加荷：a.某级荷载作用下，桩顶沉降量大于前一级荷载作用下沉降量的5倍，且桩顶总沉降量超过40mm；b.某级荷载作用下，桩顶沉降量大于前一级荷载作用下沉降量的2倍，且经24h尚未达到相对稳定标准；c.加载量已达承载力极限值；d.锚桩上拔量已达到允许值；e.Q～s曲线呈缓变型时，可加载至桩顶总沉降量大于60mm～80mm。（6） 卸荷：每级卸载量为加载量的2倍，每级卸荷后隔15、15、30min各测读一次残余沉降，即可卸下一级荷载，全部卸完后隔3～4h再测读一次，然后终止试验。以此方法算下来：（每级稳定前提下）加荷约18小时，卸荷7~8小时，合计约25~26小时). /p/%B4%F8%D7%C5%D4%C2%C1%C1%B3%F6%D5%F7 /p/%E5%93%88%E5%93%88%E5%98%BF%E5%98%BF%E7%9A%84%E7%94%9F%E6%B4%BB /html/2018/1028/7033146120001154.shtm /html/2018/1026/5342333121001323.shtm /html/2019/0311/5131244134002020.shtm /html/2020/0223/8113051012002077.shtm /html/2018/1016/5124000130001322.shtm /html/2019/0218/5142101004002012.shtm /html/2018/1104/6142144214001225.shtm /html/2019/0927/8071106101002052.shtm /html/2019/0820/7141034110002050.shtm /html/2019/0913/5221230344002124.shtm /html/2019/0730/6205111000002052.shtm /html/2019/0925/8036121035002052.shtm /shop/df3d866fb84ae45c3b358c2f /html/2019/0802/7063144056002044.shtm /html/2018/1125/8033102077001134.shtm /html/2018/1125/5023114223001332.shtm /html/2018/1125/5023114223001332.shtm /html/2018/1102/7163012050001155.shtm /html/2018/1029/8045022116001130.shtm /view/1248d4104793daef5ef7ba0d4a7302768f996f94.html /view/cd869dc0dc36a32d7375a417866fb84ae55cc34b.html /view/bef727fd77c66137ee06eff9aef8941ea76e4ba7.html /view/7114e7aa842458fb770bf78a6529647d262834f5.html /view/acddeb05d05abe23482fb4daa58da0116d171f6b.html /view/f8918561d5d8d15abe23482fb4daa58da1111c25.html /view/b9482a8e657d27284b73f242336c1eb91b373338.html /view/b40f232fdc3383c4bb4cf7ec4afe04a1b071b0be.html /view/561a67f2a66e58fafab069dc5022aaea988f419e.html /view/9865f7bd8f9951e798ce2f006665b3.html /view/561a67f2a66e58fafab069dc5022aaea988f41