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关键词： 道路桥梁   伸缩缝   施工技术  

摘要： 随着经济水平的不断增长,城市各项基础设施建设也在不断的完善,其中道路桥梁的建设也是人们关注的重中之重。在市政道路桥梁施工过程中,经常会出现各种各样的问题影响人们的正常出行,也会阻碍区域经济的快速发展,所以在市政道路工程建设过程中,应加大对各种施工技术的关注力度。因此在本文中,就针对伸缩缝施工技术进行探讨和分析。

关键词： 装配式建筑   干燥收缩   内隔墙板  

摘要： 装配式建筑为建筑行业带来转型升级的重大机遇,三板体系是装配式建筑行业的重要部品,而作为非承重的内隔墙板以施工速度快、隔音效果好、质轻、表面平整度高、免抹灰等优点迅速在建筑市场推广与应用。混凝土空心内隔墙板的综合成本低,能应用于高层住宅、酒店与宿舍。研究内隔墙板的干燥收缩性能有利于提高建筑物的质量,减少内隔墙板自身产生的裂缝而影响美观与建筑物的使用寿命。研发干燥收缩免反复操作实验装置有利于提高内隔墙板干燥收缩检测效率,从而提升内给墙板抗干燥收缩性能。

关键词： Sobolev equation   Finite difference   Local meshless method   RBF   LRBF-PUM   Error estimate  

摘要： This paper develops a numerical approach for finding the approximate solution of the Sobolev model. This model describes many natural processes, such as thermal conduction for different media and fluid evolution in soils and rocks. The proposed method approximates the unknown solution with the help of two main stages. At a first stage, the time discretization is performed by means of a second-order finite difference procedure. At a second stage, the space discretization is accomplished using the local radial basis function partition of unity collocation method based on the finite difference (LRBF-PUM-FD). The major disadvantage of global techniques is the high computational burden of solving large linear systems. The LRBF-PUM-FD significantly sparsifies the linear system and reduces the computational burden, while simultaneously maintaining a high accuracy level. The time-discrete formulation is studied in terms of the stability and convergence analysis via the energy method. Three examples are illustrated to verify the efficiency and accuracy of the method. (C) 2021 Elsevier Inc. All rights reserved.

关键词： 类型   作用   存在的问题   措施  

摘要： 高速公路上桥梁的伸缩缝,是指桥梁表面满足变形条件,桥梁的接合处或梁端、梁端之间,以及立交桥和伸缩缝之间。伸缩缝对高速桥起着非常重要的作用,是桥梁的主要组成部分。随着我国经济水平迅速发展,高速公路桥梁能满足人们日常出行,因此,本文将分析高速公路桥梁拉伸的类型和功能、桥梁拉伸的典型病害及原因,以及高速公路桥梁拉伸的养护管理措施,避免了高速公路桥梁拉伸的危险,促进公路桥梁工程的经济效益和质量的提高。

摘要： Squamous cell carcinoma of the colon is a rare tumor and primary cecal localization is unusual. This malignant condition is marked by a worst prognosis due to early local invasion. We report a case of a 46-year-old female patient admitted to the emergency department with symptoms of peritonitis. CT scan showed a cecal tumor perforated in the retroperitoneal space. The patient underwent right hemicolectomy with D2 lymphadenectomy without intestinal anastomosis. The diagnosis of squamous cell carcinoma was confirmed by histopathological examination. Squamous cell carcinoma is a malignant tumor with poor prognosis, hence, the interest of early diagnosis and management.

关键词： 伸缩缝施工技术   市政道路施工   应用  

摘要： 市政道路施工是现代城市建设中比较基础的施工项目,随着这一市政道路施工项目研究的深入,伸缩缝施工技术出现在这一项目施工中,如何发挥这一技术的优势、提高市政道路施工的效果就成为了当下城市建设中迫切需要突破的问题。由此,本文从伸缩缝施工技术的内容、作用出发,思考这一技术在市政道路施工中的应用,希望能为后续技术普及指出方向。