隧道穿越桩基的实例【inp见3#】

bananaliuchao

huhuiowen 发表于 2013-8-22 09:58
这样的话，该inp文件无法提交，不知版主有什么好的建议不？我还是非常想学习下版主的模型的，因为我遇到 ...

You can use other constitutive models such as MCC.
For shield tunneling, upheaval is very common, especially for the ground surface ahead of the tunnel face. You'd better get better understanding of the reason causing the settlement of ground surface. Various factors can induce the settlement of the surface including the overcutting, the insufficient supporting pressure, the insufficient grouting volume and pressure, and so on. For the overcutting, as far as I know, it is related to the volume loss during tunneling process. Usually, we have already been able to get a volume loss within 0.3% during the practical tunneling. Consequently, overcutting is not a major factor causing the settlement in this case. But if you still want to obtain settlement in your results, you can include the overcutting in your FE model.

591746126

大牛啊，赶快追起

huhuiowen

bananaliuchao 发表于 2013-9-15 19:26
You can use other constitutive models such as MCC.
For shield tunneling, upheaval is very common, e ...

好的，非常感谢版主。

yyw

版主，请问这个桩顶荷载应该加多少？根据什么确定的啊？

gutman1989

bananaliuchao 发表于 2011-6-25 11:00
首先是地应力平衡的问题。地应力平衡应该是一个比较成熟的技术了，但有些刚开始接触aba的童鞋可能还不太善 ...

版主，请问（1）mdb.models['模型名字'].setValues(noPartsInputFile=ON)  这个有必要写吗？我不写好像也可以做到平衡。（2）地应力平衡report output是选择intergrate point还是centroid？

huhuiowen

bananaliuchao 发表于 2013-9-15 19:26
You can use other constitutive models such as MCC.
For shield tunneling, upheaval is very common, e ...

非常感谢版主长期来对我的帮助，这个问题已经解决了。哈哈

413106935

好东西啊，楼主好人！大赞！！！

wsh9900

很好的帖子，值得学习！

huhuiowen

bananaliuchao 发表于 2011-12-4 14:01
重新上传了文件，把其中的initial condition部分去掉了。这样inp就能导入了。大家在运行的时候还要再各自 ...

版主，不知道你这个模型还在吗？因为原“initial condition”部分去掉了，再加进去不知道模型整体尺寸，方便把这部分再贴出来吗？非常感谢

w87233

楼主在模拟隧道开挖时，怎么考虑的应力释放问题？如果采用模量衰减方法又该如何确定合理的衰减系数呢？现在被这个问题困扰，特别感激

w87233

斑竹，您在帖子里提到：开挖的同时加上等代层和衬砌单元。开挖完以后直接激活衬砌单元不久可以了吗？激活等代层有什么用处？还有，不太清楚这里的等代层是什么意思，或者在哪里能够查到，谢谢斑竹。

hy1046625957

谢谢楼主分享实例！

华子嗯哼

bananaliuchao 发表于 2011-6-25 11:01
关于后处理。因为是工程项目，所以不需要对计算结果做过多解读。下面给出几个实际过程中比较关心的结果。
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多谢楼主分享

我是二流子

膜拜膜拜，好牛。

zuihao

楼主好厉害！