- 摘 要
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（1 蘇州科技大學(xué)土木工程學(xué)院， 蘇州 215011；
2 蘇州市吳中區(qū)建筑工程施工圖審查中心， 蘇州 215128）
［摘要］為了研究T型鋼P(yáng)EC梁在豎向荷載作用下的抗彎承載性能，對兩根簡支T型鋼P(yáng)EC梁進(jìn)行了豎向加載試驗(yàn)。介紹了試驗(yàn)方案和試驗(yàn)過程，分析了T型鋼P(yáng)EC梁在豎向荷載作用下的受力性能、破壞機(jī)理、變形能力以及跨中截面應(yīng)變分布規(guī)律。試驗(yàn)結(jié)果表明：在豎向荷載作用下T型鋼P(yáng)EC梁具有良好的承載能力和變形能力；完全剪切連接的T型鋼P(yáng)EC梁橫截面應(yīng)變近似符合平截面假定；為避免脆性破壞，T型鋼P(yáng)EC梁的鋼梁翼緣應(yīng)采用較大的配鋼率；塑性中和軸位于樓板板內(nèi)，材料利用充分；配鋼率大的試件較配鋼率小的試件抗彎承載力高，剛度大；ABAQUS有限元分析結(jié)果與試驗(yàn)結(jié)果吻合較好。
［關(guān)鍵詞］T型鋼P(yáng)EC梁； 承載能力； 組合梁； 破壞機(jī)理
中圖分類號：TU398文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2017)13-0041-06
Experimental study on load\|bearing capacity of Tee steel PEC beam
Zhao Baocheng1, Shen Xiaoming2, Chen Xudong1
(1 College of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China;
2 Suzhou Wuzhong District Construction Working Drawing Inspection Center, Suzhou 215128, China)
Abstract:To research vertical load-bearing capacity of Tee steel PEC beam, test results of two simply supported Tee steel PEC beams under vertical loads were presented. Process and method of test were introduced. The carrying capacity and failure mechanism, deformation capacity, mid-span section strain distribution were analyzed. The result of the test indicates the Tee steel PEC beam has good carrying capacity and deformation ability under vertical loads. Tee steel PEC beam specimen with full shear connection exhibit cross sectional strain that meets flat section assumption. To avoid brittle failure, the flange of Tee steel PEC beam should has larger steel ratio. It is rational that plastic neutral axis is located in the flange of concrete plate. The specimen with higher steel ratio has higher bending strength and stiffness. The calculated results of ABAQUS finite element program are much coincided with the tested results.
Keywords:Tee steel PEC beam; load-bearing capacity; composite beam; failure mechanism
作者簡介：趙寶成，博士，教授，Email:zhaobc2000@163.com。
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