CAJ | 학술논문

针对桥梁铰缝损坏修复，提出压浆修复技术。为研究该技术的可行性，以某跨径8m的钢筋混凝土空心板梁桥为原型，设计并制作该桥1／4缩尺模型，进行铰缝完好状态、损坏状态及压浆修复状态下模型试验，测试各工况下结构的位移、应变及横向分布系数。分析试验结果表明：铰缝完好状态时，荷载横向传递较好；铰缝损坏状态时，剪力传递不畅，横向分布系数极不均匀，呈跳跃性变化，在偏载工况下表现出严重的单板受力现象；压浆修复状态时，各板跨中荷载～位移、荷载～应变曲线恢复到铰缝完好状态下的水平，横向分布系数实测值与铰缝完好状态实测值及理论值相近，说明该压浆修复技术能够有效地恢复桥梁损伤铰缝的剪力横向传递能力。
침대교량교봉손배수복，제출압장수복기술。위연구해기술적가행성，이모과경8m적강근혼응토공심판량교위원형，설계병제작해교1／4축척모형，진행교봉완호상태、손배상태급압장수복상태하모형시험，측시각공황하결구적위이、응변급횡향분포계수。분석시험결과표명：교봉완호상태시，하재횡향전체교호；교봉손배상태시，전력전체불창，횡향분포계수겁불균균，정도약성변화，재편재공황하표현출엄중적단판수력현상；압장수복상태시，각판과중하재～위이、하재～응변곡선회복도교봉완호상태하적수평，횡향분포계수실측치여교봉완호상태실측치급이론치상근，설명해압장수복기술능구유효지회복교량손상교봉적전력횡향전체능력。
For the restoration of the hinge joints of bridges ,the grouting remedial technique was put forward .In order to study the feasibility of the technique ,a void reinforced concrete slab beam bridge with span length of 8 m was taken as the sample bridge .The 1∶4 scale model of the bridge was prepared for the model tests under the conditions of intimate hinge joints ,damaged hinge joints and remedying hinge joints using grouting ,respectively ,to test the structural dis‐placement ,strain and transverse distribution coefficient under different load cases .The results of the analysis show that when the hinge joints are intimate ,loads are transferred well in the trans‐verse direction;whereas when the hinge joints are damaged ,the shear force transmission is ob‐structed ,the transverse distribution coefficient remains extremely uneven and exhibits jump chan‐ges;and under the eccentric load case ,severe single slab load bearing phenomenon was observed . Under the grouting remedial condition ,the load~displacement curve and the load~strain curve in the midspan of each slab restored to the state when the hinge joints were in intimate state .The measured transverse distribution coefficient is in accord with the measured and theoretical results of the hinge joints in intimate state ,which means the grouting remedial technique can effectively restore the shear force transverse transferring ability of the damaged hinge joints of bridges .