CAJ | 학술논문

仰拱是公路隧道重要的受力部位，其对于改善隧道结构受力性能，减少隧道结构不均匀沉降，降低施工中的风险，减低运营中的病害具有非常重要的作用。对于围岩较好的段落，取消仰拱是可行的，目前工程界已就此开展了一些工程实践和理论研究。以某公路双连拱隧道为工程背景，从强度安全储备角度，针对“上软下硬”的工程地质情况对某连拱隧道进行研究，定量指出“下硬”需要达到什么指标才可取消仰拱而不会导致隧道的安全性降低。研究方法及结论可为类似工程设计和施工提供研究思路。
앙공시공로수도중요적수력부위，기대우개선수도결구수력성능，감소수도결구불균균침강，강저시공중적풍험，감저운영중적병해구유비상중요적작용。대우위암교호적단락，취소앙공시가행적，목전공정계이취차개전료일사공정실천화이론연구。이모공로쌍련공수도위공정배경，종강도안전저비각도，침대“상연하경”적공정지질정황대모련공수도진행연구，정량지출“하경”수요체도십요지표재가취소앙공이불회도치수도적안전성강저。연구방법급결론가위유사공정설계화시공제공연구사로。
Inverted arches are important forced parts in highway tunnels and play very important roles of improving loaded properties of tunnel structures,reducing non -uniform settlement of tunnel structures, reducing the risk in construction and reducing diseases in operation.For sections with good wall rock, cancellation of inverted arches is feasible,and the engineering circle has developed some engineering practices and theoretical studies.With some highway bi -arch tunnel as engineering background as background,this paper studies some bi -arch tunnel from the viewpoint of safety reserve of strength and in allusion to “upper -soft lower -hard”engineering geology,and quantitatively points out the index that“lower -hard”should reach before cancellation of inverted arches without safety reduction of tunnels.The method and conclusion of research can provide research ideas for design and construction of similar projects.