轨道钢冷弯机视频

公司: 万泽愚公机械制造有限公司
价格:电联
联系人:秦少军
更新时间:2024-11-05 19:26:12 浏览次数:1
所在地:东营
标题:轨道钢冷弯机视频
来源: sxq

以下是:轨道钢冷弯机视频的产品参数

轨道钢冷弯机视频_万泽愚公机械制造有限公司,固定电话:13803400752,移动电话:13934224659,联系人:秦少军,QQ:88962040,小店区208国道东蒲村东蒲路一号发货到山东省东营市河口区、垦利区、利津县、广饶县发货到山东省东营市。山东省,东营市东营市，山东省辖地级市，别称油城、东方湿地之城、黄河水城，位于山东省北部，东、北临渤海，西与滨州市毗邻，南与淄博市、潍坊市接壤，地势沿黄河走向自西南向东北倾斜，属暖温带大陆性季风气候，总面积8243平方千米。截至2022年10月，全市辖3个区、2个县。截至2022年末，全市常住人口220.9万人。

想要了解轨道钢冷弯机视频产品吗？我们的视频介绍将为您展现产品的每个细节和特点，快来观看吧！

以下是:轨道钢冷弯机视频的图文介绍

万泽愚公机械制造有限公司

品质卓越工厂直营当地货源

山东东营液压劈裂机

山东东营液压劈裂机的详细介绍

规格多样持久耐用

隧道支护结构体系是围岩稳定性控制的关键,也是隧道设计的基本任务,而对支护结构之间相互作用过程和机制的系统认识则是定量化设计的基础. 本文从隧道围岩结构性和支护作用的本质特征出发,提出隧道支护具有"调动"和"协助"围岩承载的基本作用,明确了二者的功能分配原则和实现方式,即分别通过超前支护的保障作用、初期支护的核心作用和二次衬砌的储备作用共同完成;针对围岩的正面挤出、前倾式冒落和后倾式冒落等三种超前破坏模式,分别给出了相应的超前支护方式和支护效果评价方法;提出初期支护作为隧道围岩附加载荷的主要承担者,包括锚固体系与拱架及喷射混凝土结构,分别通过"调动"和"协助"围岩实现其承载功能,且同时具有"支"与"护"的作用;阐明了二次衬砌结构作为储备功能的内涵,建立了二次衬砌结构的载荷分担比率与刚度匹配性、支护时机的关系,并据此给出了二次衬砌结构参数和施作时机的建议值;建立了以围岩变形量$S$小和协同度$\xi$优为目标,基于超前支护、初期支护和二次衬砌与围岩相互作用三阶段的协同支护优化模型,明确了支护结构体系与围岩、不同支护结构之间以及支护结构要素之间三个层次的协同关系,并提出了隧道支护结构体系协同优化设计方法.

关键词: 隧道工程, 支护结构体系, "支护——围岩"动态作用, 协同作用, 支护结构设计

Abstract:

Tunnel support structure system is the key of controlling the stability of surrounding rock, which is also the basic task of tunnel design, while systemic understanding of the process and mechanism of interaction among support structures is the basis of quantitative design. This paper embarks from structural property of tunnel surrounding rock and the constitutive property of support effect, the basic function of tunnel support that "mobilizing" and "assisting" surrounding rock bearing is put forward, of which the function distribution principle and realization way are clarified, namely, through the guarantee role of advanced support, the core role of primary support and safety reserve role of secondary lining to complete. In view of three advanced failure modes including the positive extrusion, the forward type caving and posterior tilt falling of surrounding rock, the corresponding advanced support pattern and its effect evaluation method are given respectively. The primary support is the main undertaker of tunnel surrounding rock additional load, including the anchorage system and the arch and shotcrete structure, whose bearing function is carried out by "mobilizing" and "assisting" surrounding rock respectively, and also have the function of "bracing" and "protecting". The connotation of secondary lining structure as security reserve function is illuminated. The relationship between load sharing ratio and stiffness matching and support time of secondary lining structure is established, according to which the suggestive values of structure parameters and support time of secondary lining are provided. The collaborative support optimization model is set up based on the three stages of the interaction between advanced support, primary support, secondary lining and surrounding rock, whose targets are minimizing surrounding rock deformation S and optimizing synergy degreeξ. Three levels of synergy including relations between support structure system and surrounding rock, different support structures and different support structure elements are clarified. And a collaborative optimization design method for tunnel support structure is proposed.