弧形修建的定位(国外英文资料).docVIP

弧形建筑的定位(国外英文资料) The positioning method of arc building With the increasing number of arc public buildings, the positioning method of curved building under different construction conditions is discussed. [keywords] locate the design of the design of the building design In recent years, the design of buildings in the building has been increasing. This paper discusses the positioning method of arc building. 1 draw arcs This method is easy to use when the radius of arc is less than an hour. If the surface of a building is semi-circular, its location condition is shown in figure 1, D = 35.000 m, R = 12.600 m, deep L = 5.600 m. First of all, according to the center line calibration center O, then, centered on O according to the design of inner and outer arc radius arc, and placed in O theodolite, according to the level of design Angle Angle, lofting the radiation shape axis, the studio calibration the feature points in turn. The two arches are highly equal This method can be used when the radius of arc is larger and the arc is inconvenienced. As shown in figure 2a, the string length of a building arc length is 2do and the arch is lo. Figure 1 Figure 2 Because the string length AB is 2do, the arc of arc is high lo, so the middle point of AB is the center point C. Due to the (1) Therefore, the relative accuracy of the value and the design value of the BCBC should meet the requirements and be tested. Lets say that the radius of the arc is R (2) To make the string long BC = 2d1 (figure 2b), the BC string is high (3) So you can put a vertical line in the middle of the BC, AC, l_1, and the four equal points M, N. The spacing of the dots is equal to the requirement of the construction, and the axis of the arc is to be located. The method of polar coordinates in the three directions This method is easy and reliable when the same station needs to set several feature points. The design coordinates of the outer arc feature point 1 ~ 6 are listed in the left three column of the tabl