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一、工程概况大■十字桥位于泰县大■乡大■河(南北向)■南河(东西向)交叉处.为了解决四角交通,在交叉处兴建了一座十字桥代替三座单向桥,既方便了交通又美化了环境.该桥是由两向跨度均为34m的桁架拱组成平面交叉的空间结构,属于多次超静定结构.为了提高十字桁架拱桥各构件内力计算精度,在手算的基础上,又进行了电算校核。建成后作了静载试验,内容有挠度、应变、裂缝观测等。试验结果表明,完全达到设计要求。
First, the general situation of the project ■ Cross bridge is located in Taixian large ■ ■ ■ ■ River (north-south) Nanhe (east-west) at the intersection in order to solve the four corners of traffic at the intersection to build a cross bridge instead of three unidirectional bridge, Which not only facilitates the traffic but also beautifies the environment.The bridge is composed of two-way truss arch with a span of 34m, which belongs to the multi-statically indeterminate structure.In order to improve the calculation accuracy of the internal force of each component of the cross truss arch bridge, On the basis of calculations carried out again check. After the completion of the static load test, the content of deflection, strain, fracture observation. The test results show that fully meet the design requirements.