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以往,浙江省在漂流物多的河道上建造的桥墩,一般均采用实体浆砌块石或块石混凝土桥墩。这种桥墩圬工体积较大,既费工料,结构又笨重,在处理基础时,还要增加工作量或基柱数量。而且墩身周围设有斜坡,对石料的安砌或模板的制作均带来了麻烦。为了消除上述缺点,我省最近设计了一些薄壁墩(如图一及图二)。最薄壁厚仅35厘米。显得结构轻巧、外形美观、材料节省、造价低廉。以下表所示甲桥为例,全墩圬工体积比一般桥墩节省达74％;墩身自重大大减轻,相应减少了基础工作量或基桩数量。经过经济比较,每个墩子(包括基础)在造价上可比一般桥墩节约投资4500元左右。设计时,根据外力作用情况
In the past, the piers constructed on river courses with many drifts in Zhejiang Province were generally constructed of solid block masonry stones or concrete block piers. The piers are bulky and require a lot of work material and bulky structures. When working on foundations, they also need to increase the workload or the number of pillars. Moreover, there is a slope around the pier body, which brings trouble to the manufacture of stonework or template. In order to eliminate the above shortcomings, the province recently designed some thin-walled piers (Figure 1 and Figure II). The thinnest wall thickness of only 35 cm. Looks lightweight structure, beautiful appearance, material saving, low cost. The following table shows a bridge, for example, the total pier piers volume than the general pier save up to 74%; pier body weight greatly reduced, a corresponding reduction in the amount of basic workload or pile. After economic comparison, each pier (including the foundation) in the cost savings of about 4,500 yuan than the average pier. Design, according to the role of external forces