您好,欢迎访问三七文档
超高值的计算路拱横坡度为2%,土路肩横坡度为3%。根据设计规范,由于圆曲线横坡为4%,故圆曲线路段内、外侧硬路肩的超高横坡度为4%;圆曲线路段内侧土路肩的超高横坡度为4%,外侧土路肩作成3%的反坡。计算各桩号处超高值:bj1j2bB1bb22bb1Bbj2j1bijigDDgiAAjiCC图5.1超高计算点位置图图中:B—行车道宽度;1b—内侧路缘带;2b—外侧路缘带;—硬路肩宽度;2jb—土路肩宽度;gi—路拱横坡度;ji—土路肩横坡度;ci—超高横坡度。3、计算示例计算全超高段(从HY-QZ-YH)的全超高值JD2处:(1)内侧行车道的土路肩外侧(A点)的超高值为:mibibBbjjj63.0)04.0(75.0)04.0()325.1175.0()(2c11】(2)内侧行车道的硬路肩外侧(C点)的超高值为:mibBbj60.0)04.0()0.325.1175.0()(c11(3)内侧行车道外侧边缘的超高值为:miBb48.0)04.0()25.1175.0()(c1(4)外侧行车道外侧边缘的超高值为:miBb48.004.0)25.1175.0()(c11jb(5)外侧行车道的硬路肩外侧(C点)的超高值为:mibBbj60.004.0)0.325.1175.0()(c11(6)外侧行车道的土路肩外侧(A点)的超高值为:mibibBbjjj58.0)03.0(75.004.0)325.1175.0()(2c11计算超高缓和段(K2+211.433-HY及YH-K3+044.593)内各桩不同位置的超高值对JD2:m000.12018002.004.002.02ii2ixcgcg0L计算超高缓和段起点K2+211.433和终点K3+026.593的超高m000.120x0x0(1)外侧行车道土路肩外侧(A点)的超高值为:m32.0-18002.004.00325.1175.0)03.0(75.0)02.0()325.1175.0(iix)bb()(gcj11211)()()(CjjgjLBibibBb(2)外侧行车道硬路肩外侧(C点)的超高值:m30.0-18002.004.00325.1175.0)02.0()325.1175.0(iix)bb()(gcj1111)()()(CgjLBibBb(3)外侧行车道外侧的超高值:m24.0-18002.004.0025.1175.0)02.0()25.1175.0(iix)b()(gc11)()()(CgLBiBb计算K2+340处断面各点的超高m000.120x128.567m211.433)(K2-340)K2(x0(1)计算外侧行车道土路肩外侧(A点)的超高值:m32.018002.004.0567.12815)03.0(75.0)02.0()325.1175.0(iix)bb()(gcj11211)()(CjjgjLBibibBb(2)(2)计算外侧行车道硬路肩外侧(C点)的超高值:m34.018002.004.0567.128325.1175.0)02.0()325.1175.0(iix)bb()(gcj1111)()()(CgjLBibBb(3)计算外侧行车道边外侧缘超高值:m27.018002.004.0567.12825.1175.0)02.0()25.1175.0(iix)b()(gc11)()()(CgLBiBb(4)计算内侧行车道外侧边缘超高:m27.018002.004.0120567.12825.1175.0-)02.0()25.1175.0(iix)b()(gc11)()()()(CgLBiBb(5)计算内侧行车道硬路肩外侧(C点)的超高值:m34.018002.004.0567.8325.1175.0)02.0()325.1175.0(iix)bb()(gcj1111)()()(CgjLBibBb(6)计算外侧行车道土路肩外侧(A点)的超高值:m36.018002.004.0567.815)03.0(75.0)02.0()325.1175.0(iix)bb()(gcj11211)()(CjjgjLBibibBb同理可计算其他位置超高值,具体数值见路基设计表。
本文标题:超高计算示例
链接地址:https://www.777doc.com/doc-5615311 .html