梁桥经过拓宽改建，形成了新、老梁体拼接的组合桥。
When girder bridge is widened, a combined bridge is formed consisting of both new and old girders.
同时，对梁的拼接承载力要求以及横向钢框架横梁设计中的宽厚比控制问题进行讨论并给出了建议。
In addition, the strength requirement on beam splicing and the width-thickness ratio control of the beam are discussed and corresponding proposals are put forward.
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