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一、概况 胶济线某桥为一孔跨度为10.62米复式工字钢梁立交桥,全长17.17米。桥台为浆砌片石重力式轻型桥台,桥上线路为平坡直线。桥下净宽9.44米,净高6.80米;有一路面宽7.00米专用公路穿过。该公路来往汽车、马车频繁(300～400辆/日),且是沟通铁路附近两侧村、厂、场的唯一通道。该桥使用七十余年,两台台身正面与侧面砌石浆缝有1～3毫米竖向裂纹多处,钢梁锈蚀严重,危及行车安全。为此该桥需要翻新桥台及更换钢梁。
First, an overview of Jiaoji a bridge span of 10.62 meters duplex I-beam overpass, a total length of 17.17 meters. Abutment for the mortar stone gravel lightweight bridge abutment, the bridge line for the flat slope line. Bridge 9.44 meters in net width, net height of 6.80 meters; there is a road 7.00 meters wide dedicated road through. The road from the car, carriage frequent (300 ~ 400 / day), and is to communicate the two sides of the village near the village, plant and field the only channel. The bridge used more than 70 years, two Taiwanese front and side masonry mortar with cracks of 1 to 3 mm vertical cracks in many places, serious corrosion of steel beams, endanger traffic safety. To this end the bridge needs to be renovated abutment and replacement of steel beams.