泵站基坑开挖中的地下连续墙有限元结构计算 |
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作者姓名: | 曹明杰 曹 鑫 徐政治 |
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作者单位: | 浙江水利水电学院,杭州,310018 |
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摘 要: | 针对在某泵站基坑开挖过程中应用的超长跨度地下连续墙,首先采用ABAQUS有限元软件对抽水泵站基坑分四个开挖步进行渗流计算,在确定基坑地下连续墙两侧的地下水位分布规律后,再进行变形计算.结果表明:第四次开挖完成后,靠近基坑侧D4断面地下连续墙不同深度顶端横河向位移最大,达到35 mm.据此建议将B4-F4段南岸地下连续墙墙体厚度适当加厚变为100 cm,以减小南岸地下连续墙在基坑开挖过程中的横河向变形.
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关 键 词: | 基坑 地下连续墙 渗流计算 变形计算 有限元 |
Finite element structural calculation of underground continuous wall
in excavation of pump station foundation pit |
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Authors: | CAO Ming-jie CAO Xin XU Zheng-zhi |
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Affiliation: | Zhej iang Univer sity of Water Conser vancy and Electr ic Pow er , H angz hou 310018, China |
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Abstract: | The super2long span under gr ound co nt inuo us wall was applied in the ex cav ation of foundatio n pit of a pump statio n. In
this paper, the finite element softw ar e ABAQUS w as used to determine the seepag e of the pump stat ion in four ex cavatio n
steps. T he distr ibution law of g roundw ater levels at bo th sides of underg ro und co nt inuo us w all was obtained, and the deforma2
tion of the pit w as estimated. The results showed t hat the transver se displacement at the t op o f under gr ound w all in D4 sectio n
of different depths is the larg est, w hich is about 35 mm. Subsequently , the thickness of the under gr ound continuous w all on the
so uth bank in B42F4 section is sugg ested to incr ease to 100 cm in or der to r educe t he tr ansv erse displacement. |
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Keywords: | fo undation pit underg round continuous wall seepage calculation deformatio n calculat ion f inite element |
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