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1971年在某线×家沟设计了素混凝土空心墩,为国家节约了大量的人力和物力,加速了施工进度。铁道兵5757部队、铁研院西南科研所等兄弟单位关于素混凝土空心墩墩顶部分试验和局部稳定试验资料绩果表明,桥墩局部稳定是没有问题的。不设纵横隔板是可行的。这就为采用滑模施工创造了有利条件。现就有关情况简介如下。一、概况本桥系谷架桥,位于5‰坡道及700米半径圆曲线上,由23.8+12×31.7+23.8米预应力钢筋混凝土梁组成。#4～#7墩为素混凝土空
In 1971 in a line xjiaogou designed hollow concrete hollow for the country to save a lot of manpower and material resources and speed up the construction progress. 5757 Troop Corps, Iron and Steel Institute of Southwest Research Institute and other units on the plain concrete hollow pier pier test and partial stability test results show that the local piers stability is no problem. No vertical and horizontal partition is feasible. This creates favorable conditions for the use of slipform construction. The relevant briefings are as follows. I. Overview The bridge system valley bridge, located at 5 ‰ ramp and 700-meter radius curve, by 23.8 +12 × 31.7 +23.8 m prestressed reinforced concrete beams. # 4 ~ # 7 piers for prime concrete empty