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桥涵設計规范中§356和§266是墩台設計时經常用到的条文,由于設計者对这两条规文体会不一致。在具体应用中也就有所不同。下面仅就个人对这两条条文的膚浅认識。提出与大家共同討论。 (甲)、关於§356的討論該条文中关於法向力偏心的规定。主要系藉以控制基础底面压应力,使它合理地分布。对于一般土質地基,限制基底前后端压应力的比值。使前后端压应力值不致相差太悬殊,以免产生不均勻或不利的沉陷。对于岩石地基。則限制受拉区不要过长。使参加工作的受压区
The design specifications of bridges and culverts, §356 and §266, are frequently used in the design of piers and abutments. Because of these inconsistencies, designers can understand these two rules. In specific applications will be different. The following is a personal brief understanding of these two provisions. Proposed to discuss with everyone. (A), the discussion of §356 on the provisions of the article on the eccentricity of normal force. Mainly by controlling the base of the bottom of the compressive stress, make it a reasonable distribution. For general soil foundations, limit the ratio of compressive stress at the front and back of the substrate. So that before and after the end of the end of the stress value is not too poor disparity, so as to avoid uneven or unfavorable sinking. For rocky ground. Do not limit the tension zone too long. Pressure zone to participate in the work