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| Analysis of the Influence of Large Area Deep Foundation Pit Engineering on the Adjacent High - speed Railway |
| WANG Fei |
| (TheThird Railway Survey and Design Institute Group Corporation，Tianjin 300251，China) |
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Abstract Abstract : Research purposes ： Taking a large area deep foundation pit project which was close to a high - speed railway bridge and roadbed section as background， to insure the safety of high - speed railway， a proper safety evaluation criterion of high - speed railway was established according to current codes in this paper. By using finite element simulation，settlement of high - speed railway bridge and roadbed，differential settlement of adjacent piers，lateral horizontal deformation， longitudinal horizontal deformation， track regularity and structural safety of bridge foundation were calculated and analyzed and reasonable safety evaluation of tlie high - speed railway was given in this paper. Research conclusions ：( 1) After adding the design value，settlement of each construction stage of high - speed railway bridge and roadbed met the specification requirements of 15 mm and 20 mm. (2) Differential settlements of adjacent piers of high - speed railway bridge met the specification requirements of 4 mm. (3) Lateral horizontal deformation and longitudinal horizontal deformation of each construction met the specification requirements of 15. 75 mm and 28. 06 mm. During construction，each single pile bearing capacity of thie main lines bridge met thie allowable bearing capacity. This research was suitable for these deep foundation pit projects that adjacent high - speed railway.
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Received: 02 March 2017
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2017, Vol. 34 
