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年初我局接受了承建21座钢筋混凝土桥设计、施工任务,由于桥点分散,工期紧迫,给施工带来了困难。首先这些桥梁的整个工期,只有三个月的时间,按一般桥梁基础设计,三个月时间只完成桥基施工还是困难的。我们学习和使用了河南创造的“钻孔灌注桩法”的设计和施工。通过实践证明,这种新方法修建桥基,质量良好,设备简单,造价经济,工期缩短,是符合多快好省要求的。现在把我们用“钻孔灌注桩法”施工21座桥梁的一些体会概述如后: 在这21座桥梁中,桥长70米以上的(指净长)3座,30～60米的6座,30米以下的12座,每孔跨度6～10米,钻孔深度14～24米。我地区土质不良,沙层
At the beginning of this year, our bureau accepted the design and construction of 21 reinforced concrete bridges. Due to the scattered bridge points and the tight construction period, it brought difficulties to the construction. First of all, the entire duration of these bridges is only three months, according to the design of the general bridge foundation, only three months to complete the construction of the bridge foundation is still difficult. We have studied and used the design and construction of “Bored Piles” created by Henan Province. The practice proved that this new method of building bridge foundation, good quality, simple equipment, cost-effective, shorten the construction period, is in line with the requirements of more speed and better. Now we use the “Bored Piles Act” some of the experience of construction of 21 bridges such as: In the 21 bridges, the bridge is longer than 70 meters (referring to the net long) 3, 30 to 60 meters of 6 , 12 under 30 meters, each hole span 6 ~ 10 meters, drilling depth 14 ~ 24 meters. Poor soil in my area, sand