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轴压比对带PC填充墙的装配式联肢剪力墙受力性能影响分析
装配式联肢剪力墙 受力性能 数值模拟 轴压比
2021/4/13
在试验研究的基础上,对带预制混凝土(PC)填充墙的装配式联肢剪力墙进行数值模拟分析,系统研究不同连接方式、轴压比下结构的破坏形态、承载力、刚度、延性等性能。结果表明:PC填充墙的存在可提高结构的承载力、抗侧刚度,刚性连接时结构的周期折减系数建议取0.8~1。随着轴压比的增大,试件的屈服荷载和峰值荷载增大;轴压比小于0.3时,结构的抗侧刚度随轴压比的增大而增大,当轴压比大于0.3时,随轴压比增大,刚...
针对钢绞线锈蚀导致黏结性能下降造成预应力混凝土(PC)梁抗弯承载弯矩下降的问题,引入锈蚀影响因子研究锈蚀对预应力筋强度利用的影响,基于锈蚀PC梁静载试验,给出预应力筋强度利用率与锈蚀率的关系,进而建立锈蚀PC梁抗弯承载弯矩计算模型并进行验证。研究结果表明:PC梁抗弯承载弯矩随钢绞线锈蚀的增大而降低;在极限状态下,钢绞线屈服与配筋率和锈蚀程度有关,当配筋率小于0.23时,无论锈蚀与否,钢绞线均会屈服...
桥梁病害检测与技术状况评估是制订桥梁管养方案的技术基础.以某在役55跨连续梁桥为背景,采用JTG/T H21—2011《公路桥梁技术状况评定标准》分层综合评定方法,讨论了桥跨数增加对结构检测评估的影响,再根据结构构造特点划分检测构件,对全桥进行表观缺陷、构件裂缝、材料强度、保护层厚度与碳化深度、桥面线形等综合检测,基于构件病害分类分级指标与部件变权调整综合评估了该桥现状.检测评估结果表明:主梁、支...
为研究不同连接形式PC挂板-剪力墙体系的抗震性能,进行了4个单层双肢剪力墙足尺试件的拟静力试验。通过对比试件的受力过程和破坏形态,研究PC挂板与剪力墙之间连接构造的受力机理和抗震性能,进而验证PC挂板与剪力墙之间连接构造的合理性。为进一步优化该体系的抗震性能,补充关于新型隔离材料的直剪试验,并采用ABAQUS对带有新型隔离材料的PC挂板-剪力墙进行了对比分析。研究结果表明:带有隔离材料且仅采用限位...
基于便携式PC控制器的小型AGV系统
PC AGV WiFi AP&STA
2016/5/26
针对传统火炮检测AGV系统存在的多车组网运行过程中安全距离较大、定位精度不高等问题,研制一款基于便携式PC控制的新型自动导引车(AGV)。本设计利用PC热点建立无线通讯网络;基于WI-FI模组的AP&STA双模式,实现AGV的在线巡检;通过传感器信息融合的方式,完成AGV的位置及基于位置信息的自适应速度控制。现场测试结果表明:基于本设计的新型火炮检测AGV系统具有更高的紧密性与定位精度,且导航方式...
基于PC-PLC控制的脉冲氢闸流管老练测试系统
脉冲氢闸流管 PLC 光纤 脉冲调制器
2016/10/17
为了满足脉冲氢闸流管老练测试系统控制要求,克服恶劣的电磁干扰环境,建立一个基于PC-PLC 方式 的控制系统,介绍测试系统组成和工作原理。设计的PC-PLC 控制系统实现了老练系统各控制对象的远程协调工作, 可调重复频率脉冲输出以及管子性能参数的远程实时监测等功能;采用光纤传输,克服了管子双脉冲触发时预触发 脉冲输出瞬间对主触发脉冲造成的干扰,保证了触发单元的稳定性;利用VB 开发用户交互式界面进...
基于PC-PLC控制的脉冲氢闸流管老练测试系统
脉冲氢闸流管 PLC可编程控制器 光纤 脉冲调制器
2016/5/26
为了满足脉冲氢闸流管老练测试系统控制要求,克服恶劣的电磁干扰环境,建立一个基于PC-PLC方式的控制系统,介绍测试系统组成和工作原理。设计的PC-PLC控制系统,实现了老练系统各控制对象的远程协调工作,可调重复频率脉冲输出以及管子性能参数的远程实时监测等功能;采用光纤传输,克服了管子双脉冲触发时预触发脉冲输出瞬间对主触发脉冲造成的干扰,保证了触发单元的稳定性;利用VB开发用户交互式界面进行上位机设...
Digital Recording In Archaelogical Excavation Using Tablet PC
archaeology tablet pc methodology topography photogrammetry digital photoplan.
2015/11/11
The paper presents the use of tablet pc in archaeology, it explains what is a tablet PC and the steps to draw archaeological remains using a digital photomosaic. It’s described the test made during th...
OMNISAT: EO data acquisition system based on a programmable chip in a pc
Data Acquisition System Demodulator Modulator
2015/9/2
In the last three years, novel techniques have allowed a drastic evolution of earth station architectures for remote sensing.An Earth Observation data reception station has evolved from a collection o...
This paper presents a general architecture of the large-area terrain simulation system based on a single processor PC. It provides
methods of modeling, management and dynamic scheduling for large-are...
受施工过程的成本控制和协调性不足、施工成本计划的编制完善度不高、竣工验收成本中成本管控的痕迹模糊,以及成本分析缺乏系统和完整性等因素的制约,目前中国油气田地面工程建设所使用的成本预算管理方式对成本控制很难达到预期标准。为更精准地进行油气田地面工程建设的成本控制,以PC模式在姬白输油管道工程建设中的应用为案例,围绕其存在的问题及优化的方式展开分析。以施工安全条件、进度、质量的保障为运作前提,严格按照...
Photo-realistic Scene Generation for Pc-based Real-time outdoor Virtual Reality Applications
Outdoor Virtual Environment Synthetic Scene Crowd Animation
2015/7/15
In this study we developed a 3D Virtual Reality application to render real-time photo-realistic outdoor scenes by using present-day
mid-class PCs. High quality textures are used for photo-realism. Cr...
PC-BASED 3D IMAGE MEASURING STATION WITH DIGITAL CAMERA AN EXAMPLE OF ITS ACTUAL APPLICATION ON A HISTORICAL RUIN
Three-dimensional Measurement Digital Camera Calibration Non-Metric Close Range Historical Ruin
2015/5/25
We have developed a new inexpensive PC-based photogrammetry system, by which we can accomplish rapidly in real time all the measurement and analysis, including photographing, 3D measurement, plotting,...
LOW-COST PC-BASED SYSTEM FOR RAPID 3D ARCHIVING OF ARCHAEOLOGICAL FINDS
Close-range photogrammetry Camera orientation Coded targets Photogrammetry Calibration Automation
2015/5/25
Archeology is a science that has a great demand for documenting and archiving a lot of artifacts found during excavations. Progress in digital imaging creates background for replacing drawings of arti...
PC-BASED DIGITAL CLOSE-RANGE PHOTOGRAMMETRIC SYSTEM FOR RAPID 3D DATA INPUT IN CAD SYSTEMS
photogrammetry calibration automation accuracy reconstruction CAD
2015/1/6
As long as CAD systems become more powerful and functionally completed they need the effective mean for rapid initial 3D data input. This data must be as possible detailed and as possible precise and ...