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桥台錐体挡土牆設計,經常碰到各种型式,如正交桥的八字式、椭圓式,斜交桥的平行式等。在进行应力分析前,首先需要解决各种型式的平面和立面尺寸,一般均采用計算方法。但由于地形变化的关系,需要試算几次才能得到結果,費时不少。笔者曾在实际工作中研究了八字式翼牆尺寸的图解法,經数次实践証明,比計算方法省事。它的优点:(1)避免反复計算,一次求出結果。(2)适合于各种地形和路堤边坡变化情况。(3)簡单易行。作图方法介紹如下: (一)已知条件: (1)翼牆展开角度α由設計者自定。 (2)翼牆靠桥台一端的高度H根据桥台填土高度决定。
Abutment cone retaining wall design, often encounter various types, such as the orthogonal bridge of the eight-character, elliptical, parallel to the skewed bridge and so on. Before stress analysis, we must first solve the various types of plane and elevation dimensions, the general method of calculation are used. However, due to the change of the terrain, it takes a lot of trial to calculate the result several times. In the actual work, I have studied the graphic method of the figure-shaped wing wall. After several times of practice, it is easier than the calculation method. Its advantages: (1) to avoid repeated calculations, one to find the result. (2) suitable for a variety of terrain and embankment slope changes. (3) simple and easy. The drawing method is introduced as follows: (a) Known conditions: (1) The wing wall deployment angle α is determined by the designer. (2) The height of the wing wall at one end of the abutment is determined by the height of the abutment filling.