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以某V形墩连续梁为研究对象,利用有限元方法建立梁单元整体模型和实体单元局部模型,详细分析引起桥梁病害的原因,并在此基础上针对具体病害提出加固方案:0号桥台盖梁开裂部位粘贴钢板;将固定支座位置由9号墩南侧变换到11号V墩,且南北两肢均设固定支座;将11号固定支座V墩横截面加大,且在V墩支座垫石局部区域粘贴钢板,V墩钢板间焊接角钢拉杆进行抗震加固;21跨梁底粘贴钢板。针对这些加固方案,依据有关规范,对加固方案进行计算与分析,证明所提出的加固方案合理可行,加固效果显著。
Taking the continuous beam of a V-shaped piers as the research object, the whole model of the beam elements and the local model of the solid element are established by using the finite element method. The causes of the bridge diseases are analyzed in detail. Based on the above analysis, the reinforcement scheme for the specific diseases is proposed: Cover the crack site of the paste steel plate; the fixed bearing position from the No. 9 pier south to the No. 11 V pier, and the north and south limbs are provided with fixed bearings; fixed pier No. 11 pier V cross-section increases, and in the V pier support pad stone local area paste steel plate, V pier steel welded steel angle bar for seismic reinforcement; 21 across the bottom of the steel plate paste. According to the relevant regulations, the reinforcement schemes are calculated and analyzed for these reinforcement schemes, which proves that the proposed reinforcement scheme is reasonable and feasible and the reinforcement effect is remarkable.