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39 10 浙 江 大 学 学 报( ) V ol 39 N o 10
2005 10 J ournal o f Zhej iang U niv ersity ( Engineer ing Science) Ot c 2005
任 涛, 童根树
( , 310027)
: ,
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: T U 323 3 : A : 1008- 97 3X( 2005) 10- 1582- 07
Bearing stress of crane runway girders under wheel loads
REN T ao, T ON G Gen- shu
( D ep ar tment of Civ il E ng ineer ing , Zhej iang Univ er sity , H angz hou 3 10027, China)
Abstract:A numerical st udy w as condu ct ed on t hr ee- dimensional f init e element mo dels t o analyze t he dis-
p ersion o f bearing st resses of w eb s in I- shap ed cr ane runw ay g ir ders under w heel lo ads Investig at ion of
the influ ences o f variou s g eo metric paramet er s on t he st res s distr ibut io n sho w ed th at the most impo rt ant
fact o rs inf luencing t he st res s disp er sion are the w eb t hickness and t he inert ia mom ent of t he rail, w hile the
inert ia mom ent of t he t op f lang e h as only minor inf lu ence T he dept h and leng t h of t he girder and its
bo undary condit io ns h ave neg ligible eff ect Based on t he t heory of beams on elast ic f oundat ion and t he nu-
m er ical result s, design equat ion s w ere proposed t o predict t he bearing str es ses on t he edg e of t he w eb p anel
and t he variat ion o f bearing st res ses along the dept h of t he w eb
Key words: bearing st ress ; st ress disp ersion ; crane runw ay g irder; w heel load; beams on elast ic f ounda-
t ion
,
G B50017 - 1
2003[ 1] ,
,
( ,
) G B50017 : lz = 50+ 5hy
+ 2hr ( m m) , hr
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