| 1. | Numerical analysis of soil arching effects in passive piles
被动桩中土拱效应问题的数值分析 |
| 2. | As analysis is shown , there are great " arching effects " in the inner tube and outer tube and also between two tubes
分析表明：外框筒、剪力墙内筒以及内外筒之间均存在明显的“拱效应” ，使结构中发生内力重分布。 |
| 3. | A plane soil arch model is established and used to simulate the soil arch effect between anti - slide piles and soil and to study the main influencing factors as well
建立了模拟抗滑桩与土体土拱效应的平面土拱模型,研究了桩间土土拱效应的主要影响因素。 |
| 4. | Based on field test and theoretical analysis , the mechanism of instability of slurry - supported excavations was investigated from angles of soil arching effect , time - dependent effect , overall stability , and local stability
同时，根据现场试验和理论研究成果，从土拱效应、时间效应、整体稳定性和局部稳定性等方面分析了泥浆护壁开挖的失稳机理。 |
| 5. | The prototype observation shows that because settlement of soil is larger than that of piles , " arch effect " appears in the embankment so that its weight is gradually transferred from the soil to piles and pile - soil stress ratio increases
现场原型观测表明，桩间土的沉降量大于桩顶的沉降量，填土中出现拱效应，填土荷载逐渐从桩问土向桩顶转移，桩土应力比逐渐增加。 |
| 6. | The results of tests show that these reinforcing measures can prolong the fatigue life of the specimen to more than twice times . it is found there exists one arch effect in the specimen owing to the lateral restraint , and it makes the phenomenon of apa specimen cracking indistinct
同时，关于apa粱式试件疲劳损伤断裂过程的模拟分析发现，由于apa梁式试件两侧的侧向约束，在试件内产生一种所谓的拱形效应，导致apa试件断裂现象不显著。 |
| 7. | Steel structure of light - weight buildings with gabled frames is a widely used steel structural style in china at present . this paper starts with the deficiency of the specificaion in calculating the effective length factors of gable portal frames . when the gable portal frame subjected to the vertical uniform loading , it conducts the arch effect ? 1 . rafter axial force is large when the slope of rafter is big
门式刚架轻型房屋钢结构体系是目前广泛应用的一种结构形式,本文从规范中门式刚架柱的计算长度系数取值的不足出发,针对山形门式刚架在竖向均布荷载作用下产生的拱效应? ? 1 、斜梁倾角较大时产生较大的梁内轴力; 2 、产生跨变效应; 3 、高跨比较小的山形门式刚架会发生跃越失稳,采用整体分析的方法对山形门式刚架的稳定进行了分析。 |
| 8. | In consideration of the soil arch effect between anti - slide piles , a calculation formula for the anti - slide pile spacing was developed , taking the following factors as the controlling conditions - the static equilibrium equation of the frictional resistance and adhesive force between the side of piles and slope soil , which sustains the thrusting force of the landside , and the strength conditions at the medial cross - section and two end sections of soil arch
摘要考虑抗滑桩桩间土拱效应，以桩侧与边坡土体间的摩阻力及黏着力承担滑坡推力的静力平衡条件和土拱跨中与拱脚处截面的强度条件共同控制，建立了抗桩间距的计算公式。 |
| 9. | On this foundation the article inducts in detail the method which is based on the relative settlement of calculating unit area end support ( qb ) force at the same time considering the feature of pedestal pile ' s " arch effect " the article introduces conception of pile effective length and finally obtain t he formula of calculating man - made pipe with bulb - shaped axial carrying capacity . the article uses marc program to calculate and analyze foundation soil ' s stress and displacement and gets the change curve chart and the proportion that is shared by king - pipe side soil friction resistance and pipe end counterforce respectively . the article inducts the structure of pedestal in detail on the basis of generalizing pedestal application cases of many countries
在此基础上论文详细归纳了以相对沉降为依据确定单位面积端承力q _ b的计算方法，并考虑扩底桩的“拱效应”特点引入了有效桩长的概念，最后结合公路规范推出了比较实用的人工挖孔扩底桩轴向承载力计算公式。论文运用了marc程序对地基土的应力和位移进行了有限元数值计算分析，得到了地基土的应力和位移场的变化曲线和在加载过程中桩侧土摩阻力和桩端反力各自所承担的比例；本文还在总结各国挖孔扩底桩应用情况的基础上就扩底桩的构造进行了详细的归纳。 |
