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采用有限元方法,详细研究了三峡船闸锚固衬砌墙在施工期和运行期受温度和渗透水压作用下的受力状态和相互作用,指出了混凝土墙受到岩基约束而产生较高的温度应力;墙后锚杆内力值很大程度取决于混凝土衬砌墙与岩基闸的接触条件的好坏。文中对最不利条件下改善锚杆受力状况提出了有效的改进措施,使混凝土衬砌墙和锚杆的受力状态都处于允许范围内,所得结论可供设计施工单位参考。
The finite element method is used to study the stress state and interaction of the anchor lining wall of the Three Gorges Project in detail during the construction and operation periods under the influence of temperature and infiltration hydraulic pressure. It is pointed out that the concrete wall is constrained by the rock foundation to produce high temperature stress The value of internal force of anchor bolt after the wall greatly depends on the contact condition between the concrete lining wall and the rock-burst gate. In this paper, effective measures to improve the stress conditions of the anchor under the most unfavorable conditions are put forward, which make the stress state of the concrete lining wall and the anchor rod within the allowable range. The conclusions can be used for reference by the design and construction unit.