[求助]基坑支护flac 3的模拟 [复制链接]

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基坑尺寸40m×40m×12m，采用φ500的悬臂桩支护桩，请问一下各位老师为什么我模拟出的支护桩和桩后土向坑外移动？请老师们帮忙看看是不是桩的参数和冠梁参数取错了。 -gX2{dW  
这是基坑y向位移的一张云图。

图片:整体y向位移云图.png

请各位老师帮我找下原因。

建议你仔细看看程序，你垂直方向取了30米，划分了15个单元格，每个单元格是2米，挖土阶段怎么会出现29米？

kunshan_zqs:建议你仔细看看程序，你垂直方向取了30米，划分了15个单元格，每个单元格是2米，挖土阶段怎么会出现29米？ (2013-09-28 22:54)  qr;" K?NX  

Y }d>%i+  
首先谢谢您的解答。29m是施工冠梁的第一个工况！

如果对半个单元的材料参数取为零，程序上是否允许，或者会出现什么状况？你是否可以考虑把上面28至30之间划为两层单元

kunshan_zqs:如果对半个单元的材料参数取为零，程序上是否允许，或者会出现什么状况？你是否可以考虑把上面28至30之间划为两层单元 (2013-09-30 14:59)  IFe[3mB5  

>FO=ioNY  
我找到原因了，是桩的侧向刚度和粘结强度取值太大了，我调整了一下过去了。你的将28至30划分为两个单元，也是有理的，我试过如果将桩设置在网格中间，比如说20.5的位置处，就不能计算了，不知道这是什么原因……

修改后的模拟效果可否给大家看一下呢