Calculation method of cloud island type station end horn mouth and related parameters thereof

A bell mouth and station technology, applied in design optimization/simulation, CAD numerical modeling, special data processing applications, etc., can solve problems such as calculation, vehicle speed limit, bell mouth length, etc., to improve landscape effects and reduce engineering investment. Effect

Pending Publication Date: 2021-02-26
CHINA RAILWAY DESIGN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this scheme is: the bell mouth passes at a low speed, which reduces the travel speed of the line
[0008] Both the existing technical scheme 1 and the technical scheme 2 do

Method used

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  • Calculation method of cloud island type station end horn mouth and related parameters thereof
  • Calculation method of cloud island type station end horn mouth and related parameters thereof
  • Calculation method of cloud island type station end horn mouth and related parameters thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (1) Selection of bell mouth curve speed (calculated with 4 groups as an example)

[0022] The length of Yunba 4 marshalling vehicle is 33.6m. According to the conventional design, the bell mouth does not invade the range of the vehicle parking position. The common acceleration and deceleration speed of Yunba is ±1m / s 2 , according to the relationship between speed and displacement, the distance traveled by the vehicle to accelerate from a static state to 80km / h is about 247m, which is greater than the length of the bell mouth under the condition of no speed limit (l=2*28m=56m) + the length of a train (33.6m ), so the running state of the vehicle in the range of the bell mouth is a state of uniform acceleration. According to the requirements of "Design Specifications for Rubber-tyred Tramway Transportation System (DBJ / T15-172-2019)", the distance L and the speed V of a vehicle's rear end from the effective platform end have the following relationship:

[0023]

[00...

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Abstract

The invention provides a calculation method for protecting a cloud island type station end horn mouth and related parameters thereof. The shortest station end horn mouth length is obtained under the conditions that the comfort degree of passengers is guaranteed, the speed of a train is not limited or the influence is slight (the influence degree is less than 5%), and the length of a circular curveand a clamping straight line is not smaller than the length of one train (not smaller than the full axle distance under difficult conditions). The specific parameters of the horn mouth are set as follows: the radius R is equal to 400m, the relaxation curve length l is equal to 10m, the actual superelevation rate h is equal to 2 percent, the rotation angle theta is equal to 2 degrees, 52 minutes and 00 seconds, and the allowable passing speed V is equal to 45km/h; and the second curve parameters of the horn mouth are set as follows: the radius R is 500 m, the relaxation curve length l is 16 m,the actual superelevation rate h is 2.5%, the rotation angle theta is 2 degrees 52 minutes 00 seconds, and the allowable passing speed V is 60 km/h. Compared with the prior art, the method has the beneficial effects that the purposes of reducing the engineering investment and improving the landscape effect are achieved.

Description

technical field [0001] The invention relates to the field of urban rail transit line design, in particular to a method for calculating a bell mouth at a Yunba island type station end and related parameters thereof. Background technique [0002] The Yunba (rubber-tyred tram) system is a small-capacity urban rail transit, suitable for lines with a peak passenger flow of 0.2 to 10,000 people per hour, and generally adopts an elevated laying method. The length of the car is 7m (the head car is 8.3m), the marshalling method is generally 2 to 6 marshalling, and the common starting acceleration is 1m / s 2 . According to the inspection and calculation, island-type stations adopt 5m wide platforms to meet the passenger flow collection and distribution capacity of general stations. Taking the first phase project of Shenzhen Pingshan Yunba Line 1 and Shenzhen Longgang Yunba Line 1 project as examples, all stations adopt platform widths of 5m island type station, station line spacing i...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06F30/20G06F111/10
CPCG06F30/13G06F30/20G06F2111/10
Inventor 王楚骄陈剑包乐培王珩阳朱志浩
Owner CHINA RAILWAY DESIGN GRP CO LTD
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