Construction Project Management and Construction Quality Control Strategy

With the gradual acceleration of the urbanization process,the construction industry has been developing rapidly.As the key link to ensure the quality and safety of the project,construction management and construction quality control are of great significance to enhance the competitiveness of construction enterprises and realize sustainable development.In this paper,the effective strategy of construction management and the effective strategy of construction quality control will be discussed in depth,aiming at providing useful management and quality control strategies for construction enterprises.

Special Marking of 3D Networks＇ Points for the Monitoring of Modern Constructions

In order to monitor the deformations of modern constructions a local 3D network was usually being established at the surrounding area. The centering error, of both the instrument and targets, causes significant uncertainties in the determination of the x, y, z coordinates of the network＇s points. In order to assure precise centering for both the instrument and targets, not only for the accessible but also for the inaccessible network＇s points, a prototype way of marking is being implied. A special semi-permanent portable metallic stand （Photo 1） was manufactured for marking the accessible points. The stand provides forced instrument centering of the order of_＋0, lmm. It is light enough to carry, it accelerates and facilitates the centering and leveling of the instrument as well as it eliminates the time needed for the measurements. The applied laboratory checks in order to certify the suitability of its use and the provided accuracy are being described. For the inaccessible points special targets were used. The targets were put in permanent attachments （Photos 7-8）, which were also manufactured. Useful conclusions were drawn when these special accessories were used in to a 3D network, which was established for the monitoring of a new football stadium. Two measurement phases were carried out. The first one is with the stadium empty and the second one is when it was crowded （about 32000 people） during a significant football match.

Construction of Evaluation Model of Dynamic Stratified Grade Point of Automobile Electrical System Diagnosis Course

The accurate evaluation of a course determines the quality of learning and is the basis for evaluating the students' academic achievements. This paper, on the theoretical basis of grade point, builds a dynamic stratified GPA (Grade Point Average) evaluation model for the course Automotive Electrical System Diagnosis, focuses on the whole process assessment and aims to stimulate the enthusiasm of learning to meet the demands of the training of social skilled talents.

Analysis of Common Problems and Technical Points in Quality Management of City Water Supply and Drainage Construction Quality

In recent years,the quality of people’s lifestyle has significantly increased when the speed of social and economic development is accelerating.Among them,the management of city water supply and drainage construction quality can provide the necessary guarantee for the improvement of people’s quality of life,so the scientific of construction quality management will also become the focus of urban modernization.However,there are many problems in the management of water supply and drainage construction quality in cities after considering the real situation.If the problems are not solved as soon as possible,it will affect people’s daily life and works badly and also restrict the development of urbanization.Therefore,the implementation and practical of city water supply and drainage construction quality management are very important.Based on this,the main research content of this article is about the city water supply and drainage construction quality management and to elaborate the existed common problems and raises up some technical points and hopes that this article content can help in the management of drainage construction quality.

Inverse Construction Methods of Heterogeneous NURBS Object Based on Additive Manufacturing

According to the requirement of heterogeneous object modeling in additive manufacturing(AM),the Non-Uniform Rational B-Spline(NURBS)method has been applied to the digital representation of heterogeneous object in this paper.By putting forward the NURBS material data structure and establishing heterogeneous NURBS object model,the accurate mathematical unified representation of analytical and free heterogeneous objects have been realized.With the inverse modeling of heterogeneous NURBS objects,the geometry and material distribution can be better designed to meet the actual needs.Radical Basis Function(RBF)method based on global surface reconstruction and the tensor product surface interpolation method are combined to RBF-NURBS inverse construction method.The geometric and/or material information of regular mesh points is obtained by RBF interpolation of scattered data,and the heterogeneous NURBS surface or object model is obtained by tensor product interpolation.The examples have shown that the heterogeneous objects fitting to scattered data points can be generated effectively by the inverse construction methods in this paper and 3D CAD models for additive manufacturing can be provided.

Difficulty Analysis of HVAC Construction and Key Analysis of Improved Technology

This paper expounds the concept of HVAC construction,specifically analyzes the current situation of HVAC construction in construction engineering,and focuses on the key and difficult points in HVAC construction.In order to provide an effective reference for improving the quality of HVAC construction in the current construction engineering,some suggestions are put forward for improvement of relevant technologies involved in key and difficult points.

Focus of the Construction of the Ecological Civilization in Socialism with Chinese Characteristics in the New Era

Marx and Engels related and analyzed the relationship between humans and nature as early as more than 100 years ago. and they revealed the interdependent and indivisible relationship between humans and nature in the development of the human society and history from the perspectives of the dialectical materialism and the historical materialism. The Communist Party of China has always attached great importance to the ecological problems. The ＂17th CPC National Congress＂ wrote for the first time the ＂ecological civilization＂ into the political report. The ＂18th CPC National Congress＂ placed the construction of the ecological civilization in a prominent position, emphasizing that the ecological construction should be integrated into all aspects and the whole process of the economic construction, the political construction, the cultural construction and the social construction. The report of ＂19th CPC National Congress＂ promoted the construction of the ecological civilization to a new strategic level, and made an Omni-directional discussion from a new height, the new goals. the new values, the new roles and the new initiatives and other aspects.

Design and Construction Technology of Prefabricated Reinforced Concrete Slab Culverts

Compared with traditional cast-in-situ concrete slab culverts,prefabricated reinforced concrete slab culverts can be produced more quickly and has strong quality controllability,strong earthquake resistance,and repeatability.They will be the primary production method of slab culverts in the future.This article offers a comprehensive review of the design and construction technology associated with prefabricated reinforced concrete slab culverts.The objective is to provide a valuable reference for related enterprises,enhance the quality of design and construction in precast pile configuration,and,in turn,contribute to the advancement of construction projects within our country.

使用Share Point构建医院网站协作平台

就如何搭建医院网站协作平台的方法和技术进行探讨,如采用Share Point构建医院网站,通过统一管理方式,将原有分散、独立的信息资源进行整合,搭建新的网站协作平台,提供给用户Web内容管理、文档管理与协作、信息检索等功能,使用户体验到高效、方便和简单。同时基于角色管理权限,使得文档存取访问得到有效的控制,以提高信息和文档的共享和再利用效率。

智航无人机载LiDAR系统在轨道交通建设中的应用分析

为了减少轨道交通建设外业勘测的工作量,提高制图的效率和精度,本文首先基于实际项目,选用智航SF1650六旋翼无人机载LiDAR系统对济南新东站片区进行航摄,利用获取的LiDAR点云和影像数据制作DEM、DOM,然后再进行大比例尺地形图和片区断面图的制作。通过外业勘测核实,DEM和DOM精度完全满足轨道交通建设工程制作大比例尺地形图的要求,且相较于传统立体航测,精度和数据利用率得到很大的提升,极大减少了外业勘测工作量,验证了智航SF1650无人机载LiDAR系统的可行性,为今后的工程应用提供了参考方案。

高校生理学课程思政建设路径的探索与实践

以生理学课程为例,在教学中充分挖掘生理学知识中蕴含的思政元素,把案例故事与专业知识有机结合,以案例故事作为支撑“点”,其中贯穿爱国情怀与责任、科学精神、敬畏生命、医学人文素养、中医药文化自信等育人主“线”,再映射到“理、法、情”3个层“面”中的对应思政元素。采用以点带线、以线扩面、多维结合的模式构筑“教师—课程—学生”一体化生理学课程思政建设路径,增强课程育人效果。

基于改进YOLOv8和GMM图像点集匹配的双目测距方法

针对无人塔吊系统的研究需求,提出一种基于改进YOLOv8和GMM图像点集匹配的双目测距方法,对驾驶室外环境中的塔吊吊钩进行检测识别并测距。通过双目摄像头进行图像采集,引入FasterNet骨干网络和Slim-neck颈部连接层,对YOLOv8目标检测算法进行改进,有效检测画面中的塔吊吊钩并获取检测框的二维坐标信息;采用局部敏感哈希方法,并融合分阶段匹配策略,提升GMM图像点集匹配模型的匹配效率,针对检测框中的塔吊吊钩,进行特征点匹配;最后通过双目相机三角测量原理计算得出塔吊吊钩的深度信息。实验结果表明,改进后的YOLOv8算法与原算法相比,精确率P提高了2.9%,平均精度AP50提高了2.2%,模型复杂度降低了10.01 GFLops,参数量减少了3.37 M,在提升检测精度的同时实现了模型的轻量化。改进后的图像点集匹配算法与原算法相比,各个指标表现出更加良好的鲁棒性。最后在工程现场对塔吊吊钩进行识别与测距,误差可接受范围内有效完成了塔吊吊钩的检测识别与测距任务,验证了本方法的可行性。

基于点云配准的航空发动机数字孪生模型构建

点云配准是实物和场景数字孪生模型构建的关键技术。为了适应航空工业高效、精确的虚实结合工业模式,提出了基于快速点特征直方图FPFH(Fast Point Feature Histogram)特征识别配准算法的数字孪生模型构建方法。该方法在保障精确性的前提下,通过数字化检测、信息采集、数据处理与融合,构建物理与虚拟高效互通的数字孪生模型。最后,以燃气涡轮式航空发动机中尾喷管风扇类零件为实例,验证该方法应用于该类发动机零件用于构建数字孪生模型的可行性,并最终将该方法作用于整个涡扇发动机。

基于无人机点云与BIM模型的桥梁施工进度识别方法

为准确实现桥梁施工进度监控自动化,提出一种基于无人机(unmanned aerial vehicle,UAV)点云和BIM模型的桥梁施工进度识别方法。该方法基于UAV路径规划及三维重建获取实际进度点云,通过BIM模型转点云的方式将BIM模型转化为计划进度点云,配准实际与计划进度点云,基于最近邻搜索及颜色区域生长分割桥梁构件,获得桥梁各构件的完成度。以山西临猗黄河大桥为研究对象,采集实际与计划点云数据,计算所得的各构件完成度准确度均在95%以上。该方法可快速采集进度数据并实现构件级别的桥梁施工进度识别,提高桥梁施工进度监控的自动化。

基于无人机巡检与深度学习的河道整治施工进度图像识别

长线性小流域治理工程中的河道衬砌、生态护岸等距离长、范围广、布置分散,且工区交通不便,人工巡检费时费力,难以及时掌握工程的整体施工进度形象面貌。提出了基于无人机巡检与深度学习的河道整治施工进度智能图像识别方法,通过定位施工节点(施工区域起点和终点)的位置计算施工进度。首先,建立了施工区域目标检测模型,针对无人机航拍影像进行河道衬砌护岸施工区域的识别以及施工节点的定位;然后,利用尺度不变特征变换(scale-invariant feature transform,SIFT)算法对不同视频帧中的施工节点进行匹配,并基于单目视觉的运动视差法,计算施工节点的实际工区坐标;最后,计算当前衬砌护岸施工进度,并分析进度偏差。结果表明:该方法得到的施工节点定位平均误差为1.026 m,平均相对误差为0.74%,该方法能够较为准确地从航拍图像中识别得到当前衬砌护岸的施工进程,从而实现长线性工区快速巡检,及时掌控现场施工进度,提高工程管理的智能化水平。

人工湿地技术对水源地雨水径流污染阻控的应用研究

设置了不同基质(砾石、加气混凝土)及是否种植美人蕉的不同人工湿地结构,通过小试实验对比各个工况对雨水径流污染的阻控效果.研究发现,加气混凝土与种植美人蕉的人工湿地组合成本略高(4.20元/工况),较其余工况高出1.00~2.90元/工况,但在运行的两个周期(交替运行30 h,落干48 h)内,NH_(4)^(+)-N、NO_(3)^(-)-N、TN、PO_(4)^(3-)、TP和COD_(Cr)的平均去除率分别为73.3%、47.0%、85.4%、56.4%、76.0%和65.5%,平均高出其余工况10.9%~18.8%,效果最优,性价比最高,适于推广应用.

单点锁紧装置后基座模块化更换虚拟建造分析

针对FPSO单点系泊系统锁紧装置插板和局部结构因反复焊修导致的焊接裂纹问题,提出一种模块化更换方案,以提高焊接质量、结构可靠性和现场施工效率。采用模块化更换方法,通过热弹塑性数值模拟评估单点锁紧装置后基座更换过程中的焊接变形,优化焊接顺序和坡口设计,以控制焊接过程中的变形和残余应力。同时,考虑模块边界设计和不同模块类型的特殊需求,以适应FPSO单点舱复杂结构的多样性。模拟结果显示,优化后的模块化更换方案实现了焊接变形的最小化,有效控制了焊接变形,保证了后基座模块化更换的装配精度,确保了与安装平面误差在可控范围内。模块化更换方案是一种有效的解决FPSO单点锁紧装置插板和局部结构焊接裂纹问题的方法,为后续相关在线维修或坞修提供参考。

景观种植设计中缀花草坪的设计要点

缀花草坪是一种景观设计概念,通过在草坪上巧妙地融入花卉、灌木和其他植物,创造出多样化、有趣和美丽的环境。本文介绍了缀花草坪的概念、景观种植设计中的混合原则、品种选择、养护要点以及施工方案。在景观种植设计中,缀花草坪的混合原则包括生态原则、模拟自然和色彩搭配。缀花草坪的品种选择主要分为纯野花组合、以野花为主的组合和以草坪为主体的组合。在缀花草坪设计的养护要点中,涉及浇水、施肥、修剪、间苗、杂草防除和病虫害防治等方面。最后,缀花草坪设计的施工方案包括土方造型、种植层铺设、播种和覆盖无纺布等步骤。通过这些施工方案,可以有效实现设计理念,打造出独具特色的缀花草坪景观。

高校全员大安全责任制建设与岗位安全标准化实践探索

国内实验室安全管理水平严重滞后于高校学科建设快速发展步伐与安全环境的要求。通过对新安全生产法等文件解读,开展全员参与、全过程履责的大安全观制度建设,提高实验室管理整体安全性。从安全风险防控系统性视角,构建以岗位作业行为标准化、岗位作业环境标准化及岗位安全信息标准化为主要手段的可目视化标准化管理模式,实现高校实验室安全管理模式由经验粗放型、分散化管理向精细化、目标化、责任制、标准化管理转变;打造全员、全组织安全责任制全过程全覆盖,形成高校全员全方位安全责任内生机制,推动构建“大安全”管理体系,为实验室安全治理体系与治理能力现代化提供有益探索。