CN109783974B - Edge line lofting method of high-speed railway curve platform - Google Patents
Edge line lofting method of high-speed railway curve platform Download PDFInfo
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- CN109783974B CN109783974B CN201910095951.4A CN201910095951A CN109783974B CN 109783974 B CN109783974 B CN 109783974B CN 201910095951 A CN201910095951 A CN 201910095951A CN 109783974 B CN109783974 B CN 109783974B
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Abstract
The invention discloses a boundary lofting method of a high-speed railway curve platform, which adopts tangential offset lofting and specifically comprises the following steps: translating the tangent line of the curve line to a platform as a control line, wherein the translation distance is L1; calculating a tangent curve branch distance L2 at the delta x position through curve elements; the distance delta y between the delta x position control line and the edge of the station is equal to L1-1.75+12-curve widening value-pre-control construction error; the curve widening value takes a large value between a design value and a railway technical specification calculation value; the pre-control construction error is 15mm. The invention adopts the tangent line offset method to carry out the lofting of the platform side line, ensures the smoothness and the accuracy of a curve platform, sets a construction error pre-control value during measurement and ensures the limit of railway buildings.
Description
Technical Field
The invention relates to a lofting method, in particular to a sideline lofting method of a high-speed railway curve platform, and belongs to the technical field of building construction.
Background
Along with the shortage of urban land and the pursuit of designers on building aesthetic feeling, more and more curve platforms are applied to the design of high-speed rail stations, the curve platform is paved and pasted before the track is constructed, and the railway limit is difficult to control; the curve elements at the two sides of the platform are different, so that the paving and pasting effects of the platform surface are often poor.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a side line lofting method of a high-speed railway curve platform.
In order to solve the technical problem, the invention provides a side line lofting method of a high-speed railway curve platform, which adopts tangential offset lofting and specifically comprises the following steps:
(1) Translating the tangent line of the curve line to the platform as a control line, wherein the translation distance is L 1 ；
(2) Calculating the tangent curve offset L at the Deltax position through curve elements 2 ；
(3) Δx position control line to station edge stand offset Δy=l 1 -1.75+L 2 -curve widening value-pre-control construction error;
(4) The curve widening value takes a large value between a design value and a railway technical specification calculation value;
(5) The pre-control construction error is 15mm.
The calculation of the curve widening value in the step (4) comprises the following steps:
1) According to the technical specifications of the railway, when the line speed is not more than 80km/h, the limit is 1750mm (the height is 1250 mm), and the curve position only considers the vehicle body inclination widening value W caused by the ultrahigh 1 H/1500 x H, where H is the platform height from the roof (1250 mm), H is the outer rail height;
2) Calculating a car body inclination widening value, and checking whether the design widening value meets the railway technical specification requirement;
3) The curve is widened by half width-0.5W 1 The starting point is a straight circle or a slow point and goes to a straight line segment 22 m, and the end point is a slow curve and goes to a straight line segment 13 m from the middle point. Then widen W 1 。
The beneficial effects are that: the invention adopts the tangent line offset method to carry out the lofting of the platform side line, ensures the smoothness and the accuracy of a curve platform, sets a construction error pre-control value during measurement and ensures the limit of railway buildings.
Drawings
FIG. 1 is a schematic drawing showing the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
The invention provides a boundary lofting method of a high-speed railway curve platform, which adopts tangential offset lofting and specifically comprises the following steps:
(1) Translating the tangent of the curve line toThe translation distance is L as a control line on the platform 1 ；
(2) Calculating the tangent curve offset L at the Deltax position through curve elements 2 ；
(3) Δx position control line to station edge stand offset Δy=l 1 -1.75+L 2 -curve widening value-pre-control construction error;
(4) The curve widening value takes a large value between a design value and a railway technical specification calculation value;
(5) The pre-control construction error is 15mm.
The calculation of the curve widening value in the step (4) comprises the following steps:
1) According to the technical specifications of the railway, when the line speed is not more than 80km/h, the limit is 1750mm (the height is 1250 mm), and the curve position only considers the vehicle body inclination widening value W caused by the ultrahigh 1 H/1500 x H, where H is the platform height from the roof (1250 mm), H is the outer rail height;
2) Calculating a car body inclination widening value, and checking whether the design widening value meets the railway technical specification requirement;
3) The curve is widened by half width-0.5W 1 The starting point is a straight circle or a slow point and goes to a straight line segment 22 m, and the end point is a slow curve and goes to a straight line segment 13 m from the middle point. Then widen W 1 。
The invention adopts the tangent line offset method to carry out the lofting of the platform side line, ensures the smoothness and the accuracy of a curve platform, sets a construction error pre-control value during measurement and ensures the limit of railway buildings.
The above-described embodiments of the invention are intended to be examples only, and not to be limiting, and all changes that come within the scope of the invention or equivalents thereto are intended to be embraced thereby.
Claims (2)
1. A boundary lofting method of a high-speed railway curve platform is characterized in that: adopting tangential offset lofting, specifically comprising the following steps:
(1) Translating a tangent line of the curve line to a platform as a control line, wherein the translation distance is L 1 ；
(2) Calculating the tangent curve offset L at the Deltax position through the curve element 2 ；
(3) Δx position control line to station edge stand offset Δy=l 1 -1.75+L 2 -curve widening value-pre-control construction error;
(4) The curve widening value takes a large value between a design value and a railway technical specification calculation value;
(5) The pre-control construction error is 15mm.
2. The method for lofting a sideline of a high-speed rail curve platform according to claim 1, wherein: the calculation of the curve widening value in the step (4) comprises the following steps:
1) According to the technical specifications of the railway, when the line speed is not more than 80km/h, the limit is 1750mm, the height is 1250mm, and the curve position only considers the vehicle body inclination widening value W caused by the ultrahigh 1 H/1500 x H, where H is the station height from the roof of the rail is 1250mm, H is the outer rail height;
2) Calculating a car body inclination widening value, and checking whether the design widening value meets the railway technical specification requirement;
3) The curve is widened by half width-0.5W 1 Starting from a straight circle or a slow point to a straight line segment of 22 m, ending from a slow curve midpoint to a straight line segment of 13 m, and widening W 1 。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910095951.4A CN109783974B (en) | 2019-01-31 | 2019-01-31 | Edge line lofting method of high-speed railway curve platform |
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| CN201910095951.4A CN109783974B (en) | 2019-01-31 | 2019-01-31 | Edge line lofting method of high-speed railway curve platform |
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| CN109783974A CN109783974A (en) | 2019-05-21 |
| CN109783974B true CN109783974B (en) | 2023-05-09 |
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| CN113127956B (en) * | 2021-04-08 | 2022-10-18 | 中国电建集团中南勘测设计研究院有限公司 | Road intersection three-center circle side line calculation method and system and starting point determination method |
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| CN105222719A (en) * | 2015-10-13 | 2016-01-06 | 南昌铁路局南昌房建生活段 | A kind of contactless railroad platform gauge laser distance measurement method |
| CN106871879A (en) * | 2017-01-03 | 2017-06-20 | 中国十七冶集团有限公司 | A kind of road surface Side Pile Lofting method |
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2019
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Patent Citations (3)
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| CN102147252A (en) * | 2010-12-30 | 2011-08-10 | 中铁三局集团电务工程有限公司 | Method for determining strut positions of contact network of special railway line for passenger traffic |
| CN105222719A (en) * | 2015-10-13 | 2016-01-06 | 南昌铁路局南昌房建生活段 | A kind of contactless railroad platform gauge laser distance measurement method |
| CN106871879A (en) * | 2017-01-03 | 2017-06-20 | 中国十七冶集团有限公司 | A kind of road surface Side Pile Lofting method |
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| 曲线圆顺度拨正和曲线放样方法简化的探讨;代光伟;《西华大学学报(自然科学版)》;20090315(第02期);全文 * |
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Address after: 265500 floor 22, Zhenghai building, No. 66 Zhujiang Road, Yantai area, China (Shandong) pilot Free Trade Zone, Yantai City, Shandong Province Applicant after: China Railway 10th Bureau Group Urban Construction Engineering Co.,Ltd. Address before: 250101 6-9 / F, building 8, No. 59, Gongye South Road, Jinan area, China (Shandong) pilot Free Trade Zone, Jinan City, Shandong Province Applicant before: The Sixth Engineering Co., Ltd. of China Railway 10th Bureau Group |
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