set hoop meaning in English

定位环
紧定环箍

On the contents of two sides abovementined , this paper attempts to do some initial researches from three angles as follows : 1 , the analyses of anti - seismic features on longitudinal direction of the aqueduct l ) the seismic longitudinal effects are small . the vibrant characters are decided from the structure integration and rigidness of piers and main arch - ring of the aqueduct , so the following measures should be taken in order to weaken and isolate seismic influence : properly broadening the section sizes and adopting the high class concrete , lowering the height and barycenter of building , setting hoop steel bars so as to increase the plasticity of the concrete which can absorb the seismic energy and prevent the damages due to stress centralization on the linkages and changing place
本文试图就上述的这两大方面的内容，从以下三个角度进行了初步研究： 1 、纵槽向抗震性能分析1 )汤峪河吊杆拱支承结构的纵槽向地震效应较小；吊杆式拱架结构动力特性取决于槽墩和主拱圈的刚度，以及结构的整体性，故适当加大构件截面尺寸或提高砼标号，尽量降低结构的建筑高度和重心，在构件连接和变截面处增设梗胁，按照约束混凝土的要求来加强箍筋的配置，增加砼的延性，以克服地震时构件连接和变截面处的应力集中造成的坡坏，并吸收大量的地震能量，从而起到隔震，减震的效果。