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一、前言新澳凼大桥是连接澳门与凼仔岛的跨海公路大桥,桥长为4253m,由12m 跨引桥、35m 跨主桥和112m 跨航道孔桥组成(不包括匝道桥和立交桥)。桥面宽为19.3m。除12m引桥基桩采用60×60cm 预应力钢筋混凝土方桩外,其中35m 跨主桥和112m 航道孔桥基桩均采用有套管(钢管桩)钻孔灌注桩。全桥计有φ1.25m 钻孔灌注桩332根。地质土壤分布自上而下:1～10m 为淤泥,10～17m 为淤泥粘土,17--25m 为中粗砂,25～27m
I. INTRODUCTION The new Macao-Taipa Bridge is a cross-sea highway bridge connecting Macau with Taipa Island. The bridge is 4253m in length and consists of 12m cross-over bridges, 35m cross-main bridges and 112m cross-harbor bridges (excluding ramps and overpasses). The bridge is 19.3m wide. In addition to the 12m bridge pile with 60 × 60cm prestressed reinforced concrete square pile, of which 35m across the main bridge and 112m waterway bridge pile are used casing (steel pipe) bored pile. The bridge has φ1.25m bored cast-in-place 332. Geological soil distribution from top to bottom: 1 ~ 10m silt, 10 ~ 17m silt clay, 17-25mm for the coarse sand, 25 ~ 27m