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The specific properties of probability about loading effect on tunnel lining structure are analyzed by FEM response surface method,and the structure reliability index is calculated by fractile method.

采用有限元响应面方法衬砌结构载效应的统,并结合可靠度的分位值法进行结构可靠指标的

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epidemes, epidemic, epidemic disease, epidemic meningitis, epidemical, epidemicity, epidemiogenesis, epidemiography, epidemiologist, epidemiology,

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Even though researchers claim that lined pits will not cause a drainage problem, the room for error is marginal.

者们声称,带衬砌深坑不会引起泄漏问题,当然也不允许出任何差错。

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surcharge load

The disrupted tunnel linings spanned approximately 200 m, and the maximum settlement even exceeded 28 mm.

破裂衬砌跨度约为 200 m,最大沉降甚至超过 28 mm。

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surcharge load

Since the joint is the key structural element of shield tunnels, which is the frail part of the assembled tunnel lining.

由于缝是盾构关键结构元件,是拼装式衬砌薄弱部分。

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surcharge load

A shell element is used for the lining structure, and a solid element is used for the strata.

壳单元用于衬砌结构,实体单元用于层。

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surcharge load

The settlement of the tunnel is arranged along the longitudinal direction of the tunnel at the inner vault of the lining.

沉降沿纵向布置在衬砌内拱顶处。

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surcharge load

According to the Shiba theory, the connecting bolt and the lining segment bear tension and pressure, respectively.

根据柴氏理论,连螺栓和衬砌段分别承受拉力和压力。

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surcharge load

The parameters of shield tunnel lining and foundation soil are consistent with the numerical model.

盾构衬砌和地基土体参数与数值模型一致。

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surcharge load

Most of the urban subway tunnels are constructed by shield method, and the linings usually adopt an assembled concrete structure, which exhibits poor resistance to deformation.

城市地铁大多采用盾构法施工,衬砌通常采用装配式混凝土结构,抗变形能力较差。

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surcharge load

Responses of Tunnels to External Loads In practical engineering, the shield tunnel lining system is composed of segments connected by steel bolts.

对外部荷载响应 在实际工程中,盾构衬砌系统由钢螺栓连节段组成。

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surcharge load

The lining sections at 4 m and 14 m along the longitudinal direction of the tunnel are selected to monitor the convergence deformation of the tunnel.

沿纵向选择 4 m 和 14 m 衬砌段,以监测收敛变形。

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surcharge load

The longitudinal flexural stiffness of the shield tunnel is clearly lower than that of the continuous lining tunnel due to the existence of intersegment joints.

由于片间节理存在,盾构纵向弯曲刚度明显低于连续衬砌

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surcharge load

Ali used the stochastic adaptive finite element limit analysis method to analyze the influence of the spatial variability of soil on the undrained stability of a circular tunnel without a lining.

Ali 使用随机自适应有限元极限分析方法分析了土体空间变化对无衬砌圆形不排水稳定性影响。

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surcharge load

Through indoor model experiments, Atkinson and Potts studied the stability of tunnels in cohesionless soil and analyzed the internal force characteristics of tunnel lining structures under uniform surcharge loading.

通过室内模型实验,Atkinson 和 Potts 在无粘性土中稳定性,并分析了均匀附加载荷下衬砌结构内力特性。

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surcharge load

The field test results of the tunnel show that convergent deformation occurs in the tunnel section, and the deformation of the tunnel lining on the side of the surcharge loading is asymmetrically distributed.

现场试验结果表明,断面发生收敛变形,堆载一侧衬砌变形分布不对称。

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surcharge load

To accurately evaluate the influence of environmental loads on the deformation of the tunnel lining and reflect the true deformation of the tunnel, translation and rotation should be separated from the deformation simulation results.

为了准确评估环境载荷对衬砌变形影响,反映真实变形,应将平移和旋转与变形模拟结果分开。

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surcharge load

Under the action of the bending moment, as shown in Figure 7, the upper part of the lining segment bears tension, and the lower part bears pressure.

在弯矩作用下,如图 7 所示,衬砌上部承受拉力,下部承受压力。

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surcharge load

In this numerical simulation, 48 equidistant monitoring points are arranged in the inner circumferential direction of the tunnel lining, and the coordinate values of the monitoring points are extracted before and after deformation.

在该数值模拟中,在衬砌内圆周方向上布置了 48 个等距监测点,并提取了变形前后监测点坐标值。

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surcharge load

The displacement on the left side of the lining is much larger than that on the right side of the lining, and the maximum displacement occurs at the upper-left side of the tunnel lining (Fig 12(b)).

衬砌左侧位移远大于衬砌右侧位移,最大位移发生在衬砌左上侧[图 12(b)]。

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surcharge load

This analytical solution is effective in representing the continuous behavior of soils and especially the discontinuous deformation of tunnel linings, which is verified through comparison with previous analytical solutions.

该解析解可以有效地表示土体连续行为,尤其是衬砌不连续变形,通过与以前解析解进行比较来验证这一点。

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surcharge load

In the past, scholars have made great efforts to explore the mechanical characteristics of shield tunnel linings under the influence of extreme surcharge by methods of theoretical analysis, numerical analysis, model experiments and case studies.

过去,学者们通过理论分析、数值分析、模型实验和实例分析等方法,努力探极端加重影响下盾构衬砌力学特性。

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epidermatous, epidermic, epidermicula, epidermidalization, epidermidin, epidermidolysis, epidermidosis, epidermin, epidermis, epidermitis,

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3G, 401(K), a,
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