›› 2010, Vol. 31 ›› Issue (3): 799-804.

• Geotechnical Engineering • Previous Articles     Next Articles

Safety evaluation of the joint between steel lined reinforced concrete penstock laid on downstream face of dam

ZHANG Wei1，WU He-gao2，SU Kai2   

  1. 1. Key Laboratory of Disaster Prevention and Structural Safety at Guangxi University, Ministry of Education, Nanning 530004, China; 2. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
  • Received:2008-03-27 Online:2010-03-10 Published:2010-03-31

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Abstract:

The construction mode at the joint between steel lined reinforced concrete penstock on downstream surface of dam is summarized; and the failure mechanisms of the joint are analyzed. Two types of failure modes, shear failure along joint and tension failure perpendicular to joint, are indicated to be the main failure modes under high-intensity earthquake. Based on limit state method, expressions corresponding to the failure modes are established, which can be used to evaluate joint safety. An example is given for interpreting usage of the expressions, which shows that there exists an unfavorable combination stress state in the joint under high-intensity earthquake; and the joint can be safety when employing stepped keyslot and proper quantities of anchor bar.

Key words: penstock laid on downstream face of dam, steel lined reinforced concrete, joint between penstock and dam, safety evaluation, limit state method, high-intensity earthquake

CLC Number: 

  • TV 732.4
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