Abstract：Research purposes ： In the later construction period of the Changslia - Kunming Railway Line，some working points need rockfall protection structures which are located at junction area between bridge and tunnel，the construction disturbance is serious，and the schedule is very tight. According to these factors，through analysis and comparison of the open - cut tunnel scheme，the transverse frame scheme and the longitudinal frame scheme from applicable condition and structure internal force，the better design schemes are confirmed for different conditions. Research conclusions：( 1 ) When design the rockfall protection structure， the field condition and the construction disturbance should be fully considered. (2) When there is mound plate trolley，the open - cut tunnel scheme is the first priority. (3) Because of the construction disturbance and the bigger internal force，transverse frame scheme should not be adopted in the later construction period. (4) The longitudinal frame scheme can avoid the construction disturbance， if the precast and hoisting condition is allowed，T beam is better to be used as the cross beam，otherwise，hollow slab beam is better. (5 ) This research result could provide a reference for type selection of rockfall protection structure in similar situation.
罗仁立,郦亚军. 长昆线桥隧相接段危岩落石防护结构方案研究[J]. 铁道工程学报, 2016, 33(2): 59-63.
LUO Ren-li，LI Ya-jun. Research on the Rockfall Protection Structure for Junction Area between Bridge and Tunnel in the Changsha - Kunming Railway Line. Journal of Railway Engineering Society, 2016, 33(2): 59-63.
2016, Vol. 33 
版权所有 © 2014 《铁道工程学报》编辑部