一、工程概况新沂市新港北路新戴河桥,桥梁设计荷载为汽-20,挂-100。桥面宽15m+2×1m。上部结构为3孔16m先张法预应力空心板梁,桥墩处采用桥面连续,下部结构为柱式墩台、桩基础。桩基为直径1200mm钻孔灌注桩,桥台桩长25m,桥墩桩长31m。预应力空心板梁共计48片。先张法空心板梁宽99cm,梁高70cm,板中空洞直径50cm,预应力混凝土设计标号为 First, the project profile Xinyi City, Newport Road, Xin Dai River Bridge, the bridge design load of steam -20, hang -100. Deck wide 15m +2 × 1m. The upper structure is a 3-hole 16m pre-tensioned prestressed hollow slab beam. The bridge pier adopts a continuous deck, and the lower structure is a column pier and pile foundation. The pile foundation is a bored pile with a diameter of 1200mm. The abutment pile is 25m long and the bridge pier is 31m long. Prestressed hollow plate beam a total of 48 pieces. The first method of hollow slab width 99cm, beam height 70cm, hollow plate diameter 50cm, prestressed concrete design label