含有不同破壞模式之鋼筋混凝土抗彎構架實驗

Experimental Investigation on RC Moment-Resisting Frames with Different Failure Mechanisms

楊森盛(Sen-Sheng yang)

指導教授 ： 王勇智

國立中央大學/工學院/土木工程學系/碩士(2006年)

摘要

本實驗採用四支抗彎構架試體，實驗試體為採用一根韌性抗彎構架，乃符合規範配筋之相關規定做設計。三根為非韌性抗彎構架，主要針對於柱與接頭配筋缺失做設計，作為模擬低矮樓房之配筋缺失，藉此觀察構架受側向力作用時，裂縫的發展情形與破壞形式對於構架強度與韌性的發展。
由實驗結果顯示，根據規範之配筋相關規定做設計的試體，於接頭與柱均有緊密箍筋之圍束，能有效的抑制柱底與接頭剪力變形，以致於有良好韌性發展。對於梁柱接頭未設置箍筋之試體，由於接頭剪力變形過大，最後為接頭破壞，但有梁的圍束作用，因此其強度並非大幅度減弱。而對於柱剪力箍筋配置不足之試體，由於箍筋無法有效圍束柱剪力變形，其強度大幅減弱，最後皆產生柱底剪力破壞，視為極嚴重脆性破壞。

關鍵字

實驗 ； 抗彎構架 ； 之鋼筋混凝土 ； 含有不同 ； 破壞模式

並列摘要

Four RC moment-resisting frames were tested in the study. One of the specimens was a ductile frame designed according to code specification. Others were non-ductile frames which were designed for column and joint shear failure modes. The purpose of the study is to observe the failure behaviors of four test units.

From the test results, the code-designed specimen, having close transverse reinforcement inside the column and joint, performed a ductile behavior. The specimen with no transverse reinforcement inside the joint was failed in joint shear damage. However, the joint shear failure did not cause the overall frame collapse in an abrupt way. The specimens with deficiencies in column shear failed unlike the one with poor joint. That is the strength decrease rapidly and shear failure was imposed to the base column at the end of test.

並列關鍵字

with Different Failure Mechanisms ； Moment-Resisting Frames ； on RC ； Experimental Investigation

參考文獻

[1] ACI Committee 318,“Building Code Requirements for Structure Concrete (ACI 318-02) and Commentary (ACI 318R-02),”American Concrete Institute,Farmington Hills ,Michigan(2002).

[2] ACI-ASCE Committee 352,“Recommendations for Design of Beam-Column Joints in Monolithic Reinforced Concrete Structures,”ACI Journal, Proceeding, Vol. 82, No. 3, May-June,pp.266-283(1985).

[5] Paulay, T.,and Priestley,M.J.N., Seismic Design of Reinforced Concrete and Masonry of Buildings ,John Wiley&Sons,pp.250-286(1992).

[8]Hakuto, S.,Park, R.,and Tanaka, H.,“Seismic Load Tests on Interior and Exterior Beam-Column Joints with Substandard Reinforcing Details” ACI Structural Journal, Vol.97 ,No.1,January-February,pp.11-25(2000).

[10]Response-2000,Reinforced Concrete Sectional Analysis Using the Modified Compress Field Theory,By Evan C Bentz and Michael P Collins.