山西建筑
山西建築
산서건축
SHANXI ARCHITECTURE
2015年
17期
152-153,154
,共3页
冲击系数%不平整度%宽跨比%动响应
遲擊繫數%不平整度%寬跨比%動響應
충격계수%불평정도%관과비%동향응
impact coefficient%roughness%width-span ratio%dynamic response
采用有限元方法，研究了桥面不平整度对不同跨度及宽度简支梁桥冲击系数的影响，结果表明，桥面不平整对桥梁冲击系数影响显著，且与桥梁的宽跨比有关；当宽跨比小于1.0，桥面不平整时冲击系数随着桥梁宽跨比变化明显，而当宽跨比在2.0～3.0之间时，冲击系数的变化趋势减缓，相对稳定，宽跨比的影响可以忽略。
採用有限元方法，研究瞭橋麵不平整度對不同跨度及寬度簡支樑橋遲擊繫數的影響，結果錶明，橋麵不平整對橋樑遲擊繫數影響顯著，且與橋樑的寬跨比有關；噹寬跨比小于1.0，橋麵不平整時遲擊繫數隨著橋樑寬跨比變化明顯，而噹寬跨比在2.0～3.0之間時，遲擊繫數的變化趨勢減緩，相對穩定，寬跨比的影響可以忽略。
채용유한원방법，연구료교면불평정도대불동과도급관도간지량교충격계수적영향，결과표명，교면불평정대교량충격계수영향현저，차여교량적관과비유관；당관과비소우1.0，교면불평정시충격계수수착교량관과비변화명현，이당관과비재2.0～3.0지간시，충격계수적변화추세감완，상대은정，관과비적영향가이홀략。
The bridge impact coefficient influenced by roughness of bridge floor based on finite element method. Results indicate that roughness prominently influenced on the bridge impact coefficient. It relates to the bridge width-span ratio. The impact coefficient changed with width-span ratio obviously as width-span ratio less than 1. 0. While the impact coefficient changed slow down as width-span ratio between 2. 0 and 3. 0,and the influence of bridge width-span ratio on the impact coefficient could be ignore.
