水泥混凝土路面板角脱空状态下最不利荷位转移规律.pdfVIP

第 28 卷第 5期 重 庆 交通 大学 学 报 ( 自然 科学 版) V o l. 28 N o. 5 2009 年 10 月 JOURNAL OF CH ONGQ ING JIAOTONG UN IVER SITY ( NATURAL SC IENCE ) O ct. 2009 1 2 2 3 曾小军, 曾 胜 , 许 佳, 龚先兵 ( 1. , 510420; 2. , 4 10076; 3. , 410001) , , , , , Lv 07 m, ( ) , 04 m , ; ; ; ; U 416216 A ( 2009) 050 86505 M etastatic Pattern of theW orst Loading Position at Slab Corner of Cem ent Concrete Pavem ent under Voidage 1 2 2 3 ZENG X iaojun , ZENG Sheng , XU J ia , GONG X ianbing ( 1T est Center of G uangdong Prov ince Commun ica tion G roup, G u angdong G u angzhou 5l0420, Ch ina; 2Schoo l of T ra ff ic T ran sportation Eng ineering, Chang sha U niversity of Sc ience T echno logy, H unan Ch angsh a 4 10076, China; 3H unan Expressw ay A dm inistra tion Bureau, H unan Ch angsh a 410001, China) Abstract: Based on the ca lcu la tion o f the load ing stresses a t both the m idd le o f long itud ina l jo int and the slab co rner w hen the vo id size is var ied, the m etastatic p atte rn o f the w orst load ing position o f slab under vo idage is ana ly zed. A nd the effect o f vo idage benea th cem ent concrete pavem ent slab on the serv ice life of the slab is a lso stu died. The research result show s th at w ith the enlargem ent o f vo idage, the m ax mi um stress pos ition tran sfers from the m iddle at long itu dina l jo int to the s lab co r ner. T he boundary o f voidage area and nonvo id area( th at is the hypo tenu se o f tr iang le vo id area) becom es the w orst lo ad ing position w hen th