Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/15312
標題: 輕質骨材混凝土預鑄牆接頭之力學行為
Mechanical Behavior of Connections of Precast Lightweight Aggregate Concrete Wall
作者: 湯鈞任
Tang, Chun-Jen
關鍵字: Precast Wall
預鑄牆
Connections
Lightweight Aggregate Concrete
接頭
輕質骨材混凝土
出版社: 土木工程學系所
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摘要: 本文旨在探討市面上之預鑄牆接頭鐵件用於輕質骨材混凝土牆與常重骨材混凝土牆之差異性,主要以試驗方法進行研究,本文選擇市面上常用之三種接頭:乾式(61)調整接頭、濕式(81) 調整接頭及(56E)承重接頭進行研究。在實際用途中,乾式(61)調整接頭及濕式(81)調整接頭只承受拉力,而(56E)承重接頭必須承受拉力與剪力,本研究因此對上述三種接頭都進行抗拉試驗,只對(56E)承重接頭進行抗剪試驗。 試驗結果顯示,上述三種接頭在輕質骨材混凝土牆試體中與常重牆試體中之力學行為都相當一致,在破壞模式方面,抗拉試驗中兩類牆都顯示具有開裂及極限破壞之兩階段破壞模式,抗剪試驗中兩類牆都顯示一旦開裂即瞬間破壞;在破壞荷重方面,除了(56E)承重接頭之抗拉試驗外,其餘各種試驗結果都顯示,如果混凝土抗壓強度相同,接頭在輕質牆之荷重能力為在常重牆之85~91%。本文建議,若從混凝土抗壓強度去推求接頭之承載能力時,輕質牆一概為常重牆之八五折。
This paper primarily focused on the difference of the connections used in precast light-weight-aggregate-concrete (LWAC) walls and nomal-weight-aggregate-concrete (NWAC) walls. This article chooses three popular connections on the market, such as dry-type adjustment connection (61), wet-type adjustment connection (81) and bearing connection (56E), to perform experiments. In practical uses, connection (61) and connection (81) can only take tensile force while connection (56E) can take both tensile force and shear force. Therefore, this research performed tensile tests for all of the three selected connections, but perform only shearing tests for connection (56E). The experiment results show that the mechanical behaviors of these three kinds of connections in LWAC walls are quite similar to those in NWAC walls. In the aspect of failure mode, both LWAC and NWAC walls all reveal that they have two stages of crack and ultimate failure modes in the tensile tests. But in shearing tests, they both failed very quickly once the crack occurred. In the aspect of loading capacity, beside the connection (56E), all test results show that the loading capacities in LWAC walls are 85~91% of those of NWAC walls if the concrete compressive strength are the same. This paper suggests that the loading capacities of the connections in LWAC walls are all 85% of those in NWAC walls when the loading capacities are estimated based on concrete compressive strength.
URI: http://hdl.handle.net/11455/15312
其他識別: U0005-1808200615084300
文章連結: http://www.airitilibrary.com/Publication/alDetailedMesh1?DocID=U0005-1808200615084300
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