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1970-01-01 08:00:00
近些年来，中国在多个领域创造了大量的世界之最。这一个个的 “世界首次”“世界第一”深刻地改变了中...
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1970-01-01 08:00:00
常泰长江大桥是长江上首座集高速公路、城际铁路、一般公路三种办法于一体的过江通道，仍是世界上最大规...
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1970-01-01 08:00:00
桥梁箱梁分单箱、多箱等。一般内部为空心状，上部两边有翼缘，相似箱子，因此得名。箱梁分为预制箱梁和...
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1970-01-01 08:00:00
此次浇筑的现浇箱梁长90米，梁体为纵向和横向双向预应力系统，截面结构为单箱四室，横向宽度突变，箱...
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1970-01-01 08:00:00
【回答】接连梁桥是两跨或两跨以上接连的梁桥，归于超静定系统。接连梁在恒活载效果下，发生的支点负弯...
