山西中南部铁路桥梁设计活载计算参数研究

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Abstract Calculation parameters related to the design of live load is one of the main factors for bridge design. Shanxi Central-south Region Railway is the first I grade artery line with large axle-weight freight train in China, the live load of which is beyond the stipulations of current code. The calculation parameters of the live load of this railway is also different from those of current code. In order to satisfy the design of bridges with such large axle-weight freight train load, this paper studied the methods for calculating the live load parameters such as dynamic coefficient, centrifugal force coefficient, traction coefficient, braking force coefficient, lateral oscillation force and derailment load, and proposed the applicable calculation method and values.Research conclusions:(1) Dynamic coefficient: using literature [8] (the former Soviet Union code). (2) Centrifugal factor coefficient: using clause 4.3.6 in <Fundamental code for design on railway bridge and culvert>, but the position of centrifugal force is 2.2 m above the rail top. (3) Braking or traction coefficient: using the custom calculation methods recommended by literature [3]. (4) Lateral oscillation force: follow the literature [5] (Chinese code), to be safe, the lateral oscillation force use 120 kN . (5) Train derailment forces: improved 1.2 times, which is the ratio of uniform load in current load diagram to that in Chinese railway standard live load. (6) The research results can be used directly to the design of railway bridges with large axle-weight freight train.

Key words： railway bridge live load calculation parameters large axle-weight

Received: 10 April 2014

PACS:

U239.4

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	LI Li
	GUO Zhi-sheng
	KONG De-yan

Cite this article:

LI Li,GUO Zhi-sheng,KONG De-yan. Research on Calculation Parameters of Live Load for the Bridge Design of Shanxi Central-south Region Railway[J]. 铁道工程, 2014, 31(10): 64-68.

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2014/V31/I10/64

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