【摘要】：為提高地鐵盾構(gòu)隧道施工效率和管片拼裝精度,提出用等腰楔形環(huán)拼裝圓弧形盾構(gòu)隧道的新的理論與算法。主要結(jié)論如下:1)從理論上證明當(dāng)?shù)妊ㄐ苇h(huán)依次向相反方向旋轉(zhuǎn)相同角度θ時(shí),隧道軸線在一個(gè)平面上,隧道半徑R=L/(2sinα/2·cosθ/2),其中L是環(huán)寬,α是楔形角;2)提出一種采用容許旋轉(zhuǎn)角拼裝楔形環(huán)的算法,確定整個(gè)盾構(gòu)隧道上每個(gè)襯砌管片環(huán)的位置和方位;3)根據(jù)楔形環(huán)的方位可以確定隧道上的第幾環(huán)是左轉(zhuǎn)彎環(huán),第幾環(huán)是右轉(zhuǎn)彎環(huán),使封頂塊的位置在隧道上部,從而確定整個(gè)盾構(gòu)線路所需左、右轉(zhuǎn)彎環(huán)的數(shù)量。
[Abstract]:In order to improve the construction efficiency and assembly accuracy of metro shield tunnel, a new theory and algorithm for constructing circular arc shield tunnel with isosceles wedge ring is proposed. The main conclusions are as follows: 1) it is theoretically proved that when the isosceles wedge loop rotates the same angle 胃 in the opposite direction, the tunnel axis is in a plane. The tunnel radius R=L/ (2sin 偽 / 2 cos 胃 / 2), where L is the width of the ring and 偽 is the wedge angle, is proposed to assemble the wedge ring with the allowable rotation angle. Determine the position and orientation of each lining segment ring on the whole shield tunnel) according to the azimuth of the wedge-shaped ring, we can determine which ring on the tunnel is left turn ring and which ring is right turn ring so that the top block is located in the upper part of the tunnel. Thus determine the number of left and right turning rings required for the entire shield line.
【作者單位】： 華中科技大學(xué)工程管理研究所;
【分類號(hào)】：U231.3;U455.43

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