地基板

The research contents mainly include: First, the influence of foundation constraint condition to the temperature stress is analyzed, the temperature stress formula of ultra-long concrete anchor plate is deduced, then the influence of length to structure crack can be gotten from the formula. Second, a breathing method is set up to solve the problem of temperature stress in ultra-long concrete constructions. By setting the sliding floor, a breathing system is built up and the temperature stress reduced distinctly. Third, the effect of prestress technique in the control of temperature stress is analyzed, it is simulated and calculated through FEA to get the right way to apply the prestress. Forth, the delay of temperature field and unsteady conduction is considered, the temperature field of ultra-long concrete structure with later poured band is simulated, then temperature stress distribution after casting the concrete is calculated, finally the effect of later poured band to temperature stress of ultra-long structure is analyzed.

本文的研究内容主要包括：(1)分析了基础约束对超长混凝土结构温度应力的影响，推导了超长混凝土地基板温度应力公式，从而得出长度对结构裂缝的影响；(2)针对超长混凝土裂缝问题，提出了一种可呼吸的解决方法，通过设置滑动层，使结构成为一种"可呼吸"体系，从而有效的降低温度应力；(3)分析了预应力技术在控制超长结构温度应力中的作用，通过有限元模拟计算，得到合理的预应力施加方式；(4)考虑温度场的滞后效应及不稳定传导，对带后浇带超长混凝土结构浇注后的温度场仿真模拟，计算浇注后的温度应力分布，分析后浇带对超长结构温度应力的影响。

All angle connections at base of column sections and/or anchor plates at column base shall have hole diameters a maximum of 1/4 inch (6 mm) larger than the anchor bolts diameter.

柱子截面底部的连接角，或柱子底部的地基板应该设有孔，孔的最大直径比地脚螺栓的直径大1/4 英寸(6 毫米)。

Based on dynamic equilibrium equations of three-dimensional elasticity, a state equation was established for orthotropic foundation plates using double Fourier series, in which no assumption about stress or displacement modes was made. Analytical solutions and frequency equations of unified formulas were presented for thin and thick laminated foundation plates.

从三维弹性力学动力平衡方程入手，抛弃应力或位移模式的人为假定，利用Fourier双重级数，建立了正交各向异性地基板的状态方程，并分别给出了地基上任意层厚薄板静力问题的统一解析式和动力问题的频率方程。

Based on lots of literature and information, this paper has engaged in deep studies and brought forth a new kind of matchboard cement concrete pavement. Firstly, based on the theory of elastic thin slab and elastic subgrade, this paper has discussed the strong points and weaknesses of existed mechanics models of cement concrete pavements. Then, integrating each model's strengths and considering the practical conditions, this paper has put forward reasonable simulating models as well as basic mechanics hypothesis.

本课题在大量文献资料和作者深入研究的基础上，提出了一种新型企口板水泥混凝土路面结构，具体工作如下：(1)根据弹性薄板和弹性地基板基本理论，讨论了现有水泥混凝土力学模型的优缺点，并根据本课题的实际需要，综合各力学模型的长处，得到合理的力学仿真模型，并给出其基本假设。

In this dissertation, many works have been done on the basis of the summarization of the merits of all kinds of meshless methods after a large number of relevant references are read and studied. The basic ideas, principles of meshless methods and their development in the recent years are introduced synoptically. Applications of Element-free Galerkin method in elastic foundation plate are studied deeply and some useful conclusions are obtained as follows:(1) Comparisons between numerical solutions and analytical solutions for several different styles of weight functions, including Gaussian weight function, spline weight function and singular weight function etc, are performed. The results show that Gaussian weight function is the best one.(2) Ranges of relevant parameters for Gaussian weight function are given.(3) Influences of nodal distribution schemes and the number of Gaussian integrated dots on computational results are discussed.

在本文中，作者在认真阅读和研究所搜集到的大量参考文献、综合各种无网格法优点的基础上，首先，对无网格法的基本思想、基本原理、发展现状作了概括性的介绍；其次，对无单元Galerkin法在弹性地基板计算中的应用进行了较为深入的探讨：(1)分别对高斯型、样条型、奇异型等不同形式的权函数进行比较分析，数值计算结果与级数解析解的比较表明，高斯型权函数效果较好：(2)对高斯型权函数进行参数研究，得到地基板计算中相关参数的选取范围；(3)对不同节点分布方案和不同高斯积分对计算结果的影响等作了有益的讨论。

The research of this thesis is supported by China National Natural Science Foundation. The static and dynamic behaviour of slabs on foundation and doweled slabs of concrete pavement, identification and comparison of static and dynamic parameters are studied emphatically in this paper.

本文在国家自然科学基金项目资助下开展工作，着重研究了混凝土地基板与接缝板的静、动力特性及静、动力参数的识别与比较，主要包括以下几个方面的具有特色的内容。

ABSTRACT The research of this thesis is supported by China National Natural Science Foundation. The static and dynamic behaviour of slabs on foundation and doweled slabs of concrete pavement, identification and comparison of static and dynamic parameters are studied emphatically in this paper.

本文在国家自然科学基金项目资助下开展工作，着重研究了混凝土地基板与接缝板的静、动力特性及静、动力参数的识别与比较，主要包括以下几个方面的具有特色的内容。

The main characteristic contents are as follows:(1) Strains, displacements, reaction of soil, natural frequencies and main mode shapes et al are examined in the static and dynamic experiments of slabs on foundation and doweled slabs of concrete pavement.

1进行了混凝土地基板、接缝板的静、动力试验，主要测试内容包括应变、挠度、土基反力、频率、主振型等，从中得出了一些有意义的结论。

Based on the agility property of node disposal in meshless method, the theory can be used in the bending problem of foundation plate with arbitrary plane shape.

该理论同时适用于弹性地基上薄、中厚、厚板的计算，基于无网格法节点布置灵活的特性，可推广应用于任意平面形状的地基板的求解。

As an example, it solves the bending problems of four edges simply supported thick plate, which is loaded by six points force on spring base.

在这些建筑中，不可避免的都涉及到了弹性地基板，尤其是弹性基础的底板，包括了弹性基薄板和厚板。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。