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行走在横亘于山涧里的索桥上,此起彼伏的板块总给人一种举步维艰的感觉,而驱车行驶在出现错台、断板等病害的水泥混凝土路面上也会让人觉得如履薄冰、险象环生。对水泥混凝土路面的每条横向缩缝设置传力杆,正是为了提高板块间的传荷能力,避免错台、断板等现象的产生。传力杆的准确定位非常重要。如果设置精度不够,传力杆非但发挥不了传递荷载的作用,反而由于钢材和混凝土的线胀系数的差异而很快将路面接缝处顶坏,结果适得其反。目
Walking in the mountains lie in the rope bridge, one after another of the total plate gives a feeling of difficulty, and driving in the emergence of the wrong Taiwan, broken plate and other diseases on the concrete pavement will make people feel walking on thin ice, dangerous. For each horizontal cement concrete pavement set dowel bar, it is in order to improve the transfer capacity between plates, to avoid wrong Taiwan, broken plate and so on. The exact positioning of dowel bar is very important. If the setting accuracy is not enough, the dowel bar not only can not play the role of transmitting load, but due to the difference between the linear expansion coefficient of steel and concrete, the pavement surface will soon be bad, resulting in the opposite. Head