- 摘 要
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（蘇州科技大學土木工程學院， 蘇州 215011）
［摘要］為了研究型鋼混凝土疊合梁的滯回性能，以混凝土強度、剪跨比和腹板截面形式作為研究參數(shù)，共設計了5個U形腹板截面和1個矩形腹板截面試件，并對這6個試件進行了試驗研究。研究結(jié)果表明，剪跨比對型鋼混凝土疊合梁的滯回性能影響較大，剪跨比大的試件承載力雖然低于剪跨比小的試件，但其具有更好的延性和耗能能力，且在大位移加載時剛度退化情況較為平緩，具有較好的抗震性能?；炷翉姸燃案拱褰孛嫘问絼t對型鋼混凝土疊合梁的滯回性能影響并不明顯。
［關(guān)鍵詞］型鋼混凝土疊合梁； 滯回曲線； 截面形式； 剪跨比； 延性； 剛度退化； 耗能能力
中圖分類號：TU398+.5文獻標識碼：A文章編號：1002-848X(2020)13-0059-05
Study on the hysteresis behavior of prefabricated steel concrete beam
LIANG Song, SHAO Yongjian, GUO Jingchao, XUE Zhenyu
（College of Civil Engineering， Suzhou University of Science and Technology， Suzhou 215011， China）
Abstract:In order to study the hysteretic behavior of prefabricated steel reinforced concrete beam, taking concrete strength, shear-span ratio and cross-section form of web as research parameters, a total of five U-shaped web section specimens and a rectangular web section specimen were designed. The results of test research on the six specimens show that the shear-span ratio has a greater influence on the hysteretic behavior of prefabricated steel reinforced concrete beam. Although the bearing capacity of specimens with large shear-span ratio is lower than that of specimens with small shear-span ratio, they have better ductility and energy dissipation capacity, and the stiffness degradation is more gentle under large displacement loading, so they have better seismic performance. While the effect of concrete strength and cross-section form of web on the hysteretic behavior of prefabricated steel reinforced concrete beam are not obviously.
Keywords:prefabricated steel reinforced concrete beam; hysteretic curve; cross -section form; shear-span ratio; ductility; stiffness degradation; energy dissipation capacity
*國家自然科學基金項目(51478287)，研究生科研創(chuàng)新計劃項目 (SKCX16_038)。
作者簡介：梁松，碩士，Email：Szls921010@126.com。
