论文部分内容阅读
北京到塘沽的公路于1956年改建水泥混凝土路面时,曾在沿线路基低矮历年发生翻浆地段及改线新筑路基上,铺装了18公分厚、1公尺见方的预制混凝土块路面8万多平方公尺。这种路面的应用,在我国公路建设上还是一种新的尝试,所以从设计到施工都是在缺乏经验的情况下进行的,但是工程质量据验收委员会的评价,一般说合乎设计要求,当然这是与苏联专家的热忱帮助分不开的。这种路面在验收时发现的最大缺点是部分地段中间一排的预制块下沉,形成两边高中间洼的槽状,因而路面积水,洼陷高差最大到5公分。其次是板缝不规则,在开放交通初期也曾出现过局部松动及破裂情况。据初步分析造成缝隙不匀的原因,主要是预制块本身存在
When the road from Beijing to Tanggu was rebuilt on cement concrete pavement in 1956, more than 80,000 prefabricated concrete pavements of 18 cm in thickness and 1 m Square meters. The application of this kind of road is still a new attempt in highway construction in our country. Therefore, the design and construction are carried out under the inexperienced circumstances. However, according to the evaluation of the quality of construction by the acceptance committee, it is generally in line with the design requirements and of course This is inseparable from the dedicated help of Soviet experts. This pavement in acceptance found the biggest drawback is that in some sections of the middle of a row of prefabricated blocks sink to form a groove on both sides of the middle of the depression, so water pavement, sag height up to 5 cm. Followed by the irregular seam, also appeared in the early open traffic has been partial loosening and rupture. According to a preliminary analysis of the cause of the gap unevenness, mainly the preform itself