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基于体力理论和边值法相结合的水工高压隧洞衬砌内力计算

Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2017-01-15

Journal: 水利规划与设计

Issue: 1

Page Number: 85-90

ISSN: 1672-2469

Key Words: 水工高压隧洞;边值法;内水压力;体力;围岩承载比

Abstract: 本文将内水荷载作为体力并与边值法相结合,考虑衬砌透水并与围岩脱开后在衬砌与围岩之间存在的渗透水压力,编制了水工高压隧洞衬砌内力计算程序,并给出了算例.结果表明,与体力理论结合的边值法求出的内力显著减小,大幅降低了配筋量,更符合实际.另外,通过分析还得出围岩承载比随衬砌厚度增大而减小,随衬砌半径增大而增大,随围岩渗透系数减小而增大的结论,可为工程实际提供参考.

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