CAJ | 학술논문

小半径曲线连续钢箱梁桥在初始设计支承条件下，在最不利工况时，支反力出现较大负值。如果不采取措施，桥梁运营期支座可能会脱空，对桥梁及桥墩正常使用带来不利影响。根据曲线梁桥的特点，防止支座脱空一般采用设置拉压支座，或者梁端配重、支座横向调整等构造措施。文中结合设计实例，根据有限元计算，比较配重前后支座反力，结合钢箱梁自身特点，确定采用的最优构造措施，理论上解决支座脱空的问题。通过成桥静载试验证实采取的措施具有良好效果。
소반경곡선련속강상량교재초시설계지승조건하，재최불리공황시，지반력출현교대부치。여과불채취조시，교량운영기지좌가능회탈공，대교량급교돈정상사용대래불리영향。근거곡선량교적특점，방지지좌탈공일반채용설치랍압지좌，혹자량단배중、지좌횡향조정등구조조시。문중결합설계실례，근거유한원계산，비교배중전후지좌반력，결합강상량자신특점，학정채용적최우구조조시，이론상해결지좌탈공적문제。통과성교정재시험증실채취적조시구유량호효과。
Under-the-supporting-condition-of-initial-design-of-the-small-radius-curve-continuous-steel-box-girder,the-bearing-reaction-is-larger-negativevalue-in-the-most-unfavorable-case.If-measures-are-not-taken,bridges-support-is-expected-to-be-void,which-will-bring-adverse-effect-to-the-normal-use-of-the-bridge-and-the-bridge-pier.According-to-the-characteristics-of-the-curve-bridge,bearing-separation-can-be-prevented-by-setting-the-tension-compression-bearing,or-counterweight-of-the-beam-end,bear-ing-lateral-adj-ustment-and-other-structural-measures.Combined-with-the-design-example,the-support-ing-force-before-and-after-counterweight-is-compared-based-on-the-finite-element-computation,and-ac-cording-to-its-own-characteristics-the-optimal-structure-of-steel-box-girder-is-determined-to-solve-the-problem-of-bearing-cavity-in-theory.Finally,bridge-static-load-test-results-of-experiments-show-that-the-measures-have-a-good-practical-effect.