铁道建筑
鐵道建築
철도건축
RAILWAY ENGINEERING
2014年
4期
106-109
,共4页
城市轨道交通%减振道岔%336SD扣件系统%道岔区减振
城市軌道交通%減振道岔%336SD釦件繫統%道岔區減振
성시궤도교통%감진도차%336SD구건계통%도차구감진
Urban rail transit%Vibration-reducing turnout%336SD fastening system%Vibration reduction at turnout area
针对城市轨道交通道岔区的轨道减振问题，采用336 SD扣件系统设计的60 kg/m钢轨9号单开减振道岔，使道岔区系统静刚度控制在25 kN/mm左右，且在不同区域采用不同类型的弹性垫板，道岔区轨道刚度进行了均匀化处理，使得整个道岔区呈现有效的阻尼减振特征，实现了道岔区减振的目的。新减振道岔中使用4种不同刚度垫板，使整个道岔区的刚度保持一致，其绝缘性能以及轨距调整能力也有很大改进，阻尼减振可以达到插入损失值-8 dB的效果。
針對城市軌道交通道岔區的軌道減振問題，採用336 SD釦件繫統設計的60 kg/m鋼軌9號單開減振道岔，使道岔區繫統靜剛度控製在25 kN/mm左右，且在不同區域採用不同類型的彈性墊闆，道岔區軌道剛度進行瞭均勻化處理，使得整箇道岔區呈現有效的阻尼減振特徵，實現瞭道岔區減振的目的。新減振道岔中使用4種不同剛度墊闆，使整箇道岔區的剛度保持一緻，其絕緣性能以及軌距調整能力也有很大改進，阻尼減振可以達到插入損失值-8 dB的效果。
침대성시궤도교통도차구적궤도감진문제，채용336 SD구건계통설계적60 kg/m강궤9호단개감진도차，사도차구계통정강도공제재25 kN/mm좌우，차재불동구역채용불동류형적탄성점판，도차구궤도강도진행료균균화처리，사득정개도차구정현유효적조니감진특정，실현료도차구감진적목적。신감진도차중사용4충불동강도점판，사정개도차구적강도보지일치，기절연성능이급궤거조정능력야유흔대개진，조니감진가이체도삽입손실치-8 dB적효과。
The paper aims at significantly absorbing the vibration at the turnout areas in urban rail transit,and with this in mind it adopts the No. 9 simple vibration-reducing turnouts applied at 60 kg/m rail with 336SD fastening system,which keeps the static stiffness of the turnouts around 25 kN/mm. At the same time,different types of elastic pads are used at different locations,so as to sustain the stiffness regularity at the turnout area. The objective of the study is accomplished,as the damping vibration reduction is achieved at the area as a whole. This new vibration-reducing turnout introduces four pads with different stiffness to ensure the consistent stiffness at the turnout section. Moreover,the insulation performance and the capacity of track-gauge adjustment have been enhanced along side this improvement,while the insertion loss value stands at -8 dB.
