Title: CONTACT-JOINT MULTIPLE ELEMENT TO SIMULATE TRANSVERSE JOINT OF HIGH ARCH DAM DURING CONSTRUCTION
Abstract: A new contact-joint multiple element is presented to simulate transverse joints of high arch dam,which may simulate the transforming process of deformation and stress state of transverse joints during joint grouting construction.The mechanical character of transverse joint of arch dam can be simulated by a kind of contact element with function of separating and closing before grouting,and the one by joint element with certain thickness.During the real construction,the grouting will change the structure shape of transverse joint,but mechanical state will complete arch dam after grouting.So the transforming process of deformation and stress state of transverse joints need to be simulated truly,and the new contact-joint multiple element presented in this paper can solve this problem.The detailed transforming method and equation are derived for contact-joint multiple element.Numerical implementation process is described and finite element procedure of contact-joint multiple element is developed.The simulation results of developing process of transverse joints of Xiaowan high arch dam show that the transverse joints will be shrank to be above 0.5 mm for concrete temperature decreases resulted from water cooling of dam before grouting,except that the gaps of a few grouting zones are less than 0.5 mm which can′t meet the requirement of common grouting.But the gap of those grouting zones may be larger than 0.5 mm by means of concrete supercooling about 2 ℃–3 ℃.In summary,the variety and transforming process of transverse joint of arch dam simulated by the contact-joint multiple element may reflect real constructing process,and the computing values of gap are also reasonable.The new contact-joint multiple element used in the analysis of high arch damtransverse joint gap is feasible and practicable.
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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