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- prestress rockbolt 预应力锚杆
- Our country also studys and spreads the rockbolt technology. 我国也在研究推广锚杆支护技术。
- Shear lag is reduced for prestress in serviceability limit state . 在正常使用状态下,预应力平抑了箱梁剪力滞效应。
- The result shows that prestress can reduce the deform and tensile stress. 计算结果表明,预应力的施加能减少位移,减小拉应力;
- The rockbolt supported technique is an overall skill.It plays a more and more important role in engineering of geo-technical. 摘要锚杆支护技术是一项综合技术,其在岩土工程中发挥著越来越重要的作用。
- This paper introduces structure of waveform steel web prestress concrete box girder and construction method for several bridges. 介绍了波形钢腹板预应力混凝土箱梁的结构和几座桥梁的施工方法。
- The infuence on resonance frequencies of longitudinal-torsional ultrasonic motor exerted by prestress is studied. 摘要研究了预压力对超声马达共振频率的影响。
- Then the prestress of the piles was adjusted to the designed value in prefabrication, and good effect was achieved. 提出适当调整预应力,能够有效地解决预应力水冲桩桩身裂缝的问题。
- The various characters and change tendency of anchorage prestress ,as well as the effects of group anchorages,etc. 对锚固预应力变化特征、趋势及群锚效应等进行了综合分析;
- As a new anchor accessory on structure, FRP Rockbolt is developing in a high speed now.It’s been widely used in reinforcement of tunnels, slopes and mines overseas. FRP锚杆作为一种新型的锚固结构,发展较快,已经在国外矿山、隧道 、公路边坡支护中得到了较广泛地应用。
- The calculating of initial prestress distribution is basic and important for analyzing of double-layer cable structure. 初始预应力分布的计算是双层索结构受力分析的基础。
- A numerical model for the dynamical analyzes of the pre-stressed bolt support system was founded based on the structure of rockbolt and its mechanical characteristics. 摘要根据煤矿预应力锚杆支护系统的结构和受力特点建立了预应力锚杆支护系统的动力分析模型;
- Then the prestress of the piles was adjusted to the designed value in prefabrication,and good effect was achieved. 提出适当调整预应力,能够有效地解决预应力水冲桩桩身裂缝的问题。
- The field experiment of rockbolt nondestructive detection was selected in Chacheng Mine, the results perform the dynamical characteristics of prestressed bolt supporting system. 在垞城矿进行了预应力锚杆的现场无损检测试验。试验结果表明:数值模拟结果真实地反映了预应力锚杆支护系统的动力特征。
- It is important to calculate the initial prestress for cable-truss initial state form-finding. 初始预应力分布计算是索桁架初始态找形的重要内容。
- Only making great efforts in these two aspects and practicing normalized management for several small factors can improve the quality of the shotcrete rockbolt support in the t... 只要在这两方面下功夫,同时对诸多小因素进行规范管理,井巷锚喷支护质量一定会得到提高。
- Due to exerting prestress, the structure has satisfiable self-centering capability. 此外由于施加了预应力,使得该结构具有良好的恢复力特性。
- And, the system has the special front supporting provisional shoring device;it is able to manage the roof of the development machine front effectively when setting up rockbolt. 并且,该系统具有专门的前配套临时支护装置,能够在进行打设锚杆的作业时,有效地管理掘进机前方的顶板。
- The basic formulas, which can determine the ratio of each hoop cable"s prestress,are derived. 推导了环索预应力设定的基本公式,由此可确定各圈环索预应力的比值。
- Coal mine rockbolt shoring current situation,necessity and significance having discussed rockbolt shoring parameter optimization design combining with leaping forward. 结合跃进煤矿锚杆支护现状,探讨了锚杆支护参数优化设计的必要性和重要性。
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