整体式面板加筋土桥台作为一种新的桥台形式，在小跨径桥涵工程中具有较高的推广应用价值。目前对其工作机理的研究尚不深入，特别对桥台承载力特性鲜有研究。本文以斯洛文尼亚北部Z(v)erovinci桥为原型，开展整体式面板加筋土桥台模型静载试验，分析了桥台顶部沉降、面板位移、土体位移、土工格栅应变规律和潜在破裂面形式，并将桥台筋材拉力实测值与3种规范推荐的方法计算值进行对比，结果表明：在最大荷载作用下，桥台的沉降值未超出规范推荐的使用极限及强度极限；桥台中部面板水平位移最大；前、翼墙面板后土体最大位移均发生在模型顶部；在特定荷载作用下，顺桥向筋材应变最大值小于规范值，刚度法计算值与实测筋材拉力最大值吻合良好。

The geosynthetic-reinforced soil integral bridge, as a novel type of abutment, demonstrates significant application value in small-span bridge and culvert engineering. Currently, research on its operational mechanisms is limited, particularly regarding the bearing capacity characteristics of abutments, which have been seldom studied. This paper presents a static load test of a geosynthetic-reinforced soil integral bridge model based on the Z(v)erovinci bridge in northern Slovenia. The analysis includes the settlement at the top of the abutment, the displacement of the facing panel, the horizontal displacement of the soil behind the facing panel, the pattern of reinforcement strain, and the nature of the potential fracture surface. The measured tensile force of the abutment reinforcement is compared with the calculated values recommended by three codes. The results indicate that under maximum load, the top settlement of the abutment does not exceed the usage and strength limits recommended by the code. The horizontal displacement of the middle panel of the abutment is the largest, and the maximum soil displacement behind the front and wing wall panels occurs at the top of the model. Under specific loading conditions, the maximum reinforcement strain of the longitudinal bridge reinforcement remains below the normative value, and the calculated stiffness values align well with the measured maximum tensile force of the reinforcement.

TU 443

地震科技星火计划项目(XH204402)