边坡加固格构梁应用技术及C40混凝土配制研究  

Application technology of slope reinforcement grid beam and study on C40 concrete preparation

作　　者：杨海燕 YANG Haiyan(Beijing Jiaotong Vocational Technical College,Beijing 102200,China)

机构地区：[1]北京交通职业技术学院,北京102200

出　　处：《混凝土》2024年第4期162-165,共4页Concrete

摘　　要：为了解决山体滑坡及公路边坡滑坡的恶劣灾害,试验研究边坡加固技术-钢筋混凝土格构梁结构体系以及配制C40混凝土。通过石粉含量单因素试验研究了对于混凝土性能影响,并确定最佳C40混凝土配合比。钢筋混凝土格构梁加固形式分析得出加固传力方式。边坡加固工程应用探讨了工程应用可行性施工要点。试验结果表明:(1)适量石粉会提高混凝土的流动性能与力学性能。石粉最佳含量6%,即1 m^(3)混凝土中50 kg,混凝土坍落度达到109 mm,扩展度达到590 mm,抗压强度48.9 MPa,劈裂抗拉强度4.9 MPa;(2)格构梁加固传力方式为边坡土、岩体-格构梁-格构梁交点-锚杆-深层岩层;(3)边坡加固应用表明,钢筋混凝土格构梁边坡加固方式受力均匀,被动力承受能力强,整体性强。In order to solve the severe disasters of mountain landslides and highway slope landslides,experimental research was conducted on slope reinforcement technology-reinforced concrete lattice beam structure system and the preparation of C40 concrete.The influence of stone powder content on concrete performance was studied through single factor experiments,and the optimal C40 concrete mix ratio was determined.The analysis of the reinforcement form of reinforced concrete lattice beams reveals the reinforcement force transmission method.The application of slope reinforcement engineering explored the feasibility of engineering application and key construction points.The experimental results indicate that(1)An appropriate amount of stone powder can improve the flow and mechanical properties of concrete.The optimal content of stone powder is 6%,which is 50 kg per 1 m^(3) of concrete.The slump of the concrete reaches 109 mm,the expansion reaches 590 mm,the compressive strength is 48.9 MPa,and the spltting tensile strength is 4.9 MPa.(2)The force transmission method of lattice beam reinforcement is:slope soil,rock mass-lattice beam-lattice beam intersection point-anchor rod-deep rock layer.(3)The application of slope reinforcement shows that the reinforced concrete lattice beam slope reinforcement method has uniform stress,strong passive force bearing capacity,and strong overall integrity.

关 键 词：C40混凝土 石粉含量 边坡加固 钢筋混凝土格构梁 锚杆 

分 类 号：TU528.062[建筑科学—建筑技术科学]