發(fā)布時(shí)間：2018-04-22 22:36

  本文選題：電桿基礎(chǔ) + 風(fēng)載荷�。� 參考：《福州大學(xué)》2014年碩士論文

【摘要】：樁基礎(chǔ)是輸配電工程結(jié)構(gòu)中常用的基礎(chǔ)形式之一,屬于地下隱蔽工程,施工技術(shù)相對(duì)比較復(fù)雜,施工時(shí)稍有不慎極易出現(xiàn)傾覆、斷樁等質(zhì)量問(wèn)題,從而直接關(guān)系到整個(gè)樁基工程的安全。因此,對(duì)樁基進(jìn)行質(zhì)量檢測(cè)具有重要意義。目前國(guó)內(nèi)外樁基檢測(cè)主要是針對(duì)樁基承載力和樁身完整性的檢測(cè)。但在電力系統(tǒng)中,對(duì)桿塔基礎(chǔ)僅僅進(jìn)行承載力和樁身完整性的檢測(cè)是不夠的。在我國(guó)沿海地區(qū),臺(tái)風(fēng)來(lái)臨時(shí),總會(huì)造成大量電桿倒掉的現(xiàn)象,主要原因之一就是電桿基礎(chǔ)施工存在缺陷,不能抵抗風(fēng)力對(duì)基礎(chǔ)的作用彎矩。因此,對(duì)電桿基礎(chǔ)進(jìn)行抗傾覆彎矩的檢測(cè)是很必要的。為此,本文結(jié)合福州大學(xué)與福建省電力科學(xué)研究院合作項(xiàng)目“電桿試驗(yàn)裝置測(cè)控系統(tǒng)研制”課題,以配網(wǎng)線路中的直線桿塔(不帶拉線)為研究對(duì)象,提出了一種操作方便、安全可靠的電桿仿風(fēng)載荷彎矩自動(dòng)加載系統(tǒng)。通過(guò)構(gòu)建硬件平臺(tái)和軟件設(shè)計(jì),實(shí)現(xiàn)了以PC機(jī)為核心的電桿彎矩自動(dòng)加載系統(tǒng)的設(shè)計(jì)。首先,本文基于彎矩等效,通過(guò)對(duì)常規(guī)電桿的風(fēng)載荷進(jìn)行數(shù)學(xué)建模,給出了掛導(dǎo)線電桿風(fēng)載荷的計(jì)算方法,以及常規(guī)電桿所受風(fēng)載荷的限值,為后續(xù)的彎矩自動(dòng)加載系統(tǒng)的設(shè)計(jì)奠定了理論基礎(chǔ)。其次,提出了電桿彎矩加載機(jī)構(gòu)模型,通過(guò)對(duì)彎矩加載機(jī)構(gòu)四個(gè)方面的力學(xué)優(yōu)化完成了加載機(jī)構(gòu)的機(jī)械設(shè)計(jì)；并在此基礎(chǔ)上,通過(guò)對(duì)加載機(jī)構(gòu)加裝檢測(cè)節(jié)點(diǎn)和動(dòng)力與控制裝置,提出了彎矩自動(dòng)加載系統(tǒng)的總體設(shè)計(jì)方案；本文選擇電動(dòng)推桿作為彎矩加載的動(dòng)力裝置,通過(guò)上位機(jī)對(duì)電動(dòng)推桿進(jìn)行直接控制,并在機(jī)構(gòu)上設(shè)置了三個(gè)檢測(cè)節(jié)點(diǎn),從而完成了控制系統(tǒng)硬件平臺(tái)的搭建。再次,基于電桿彎矩自動(dòng)加載系統(tǒng)所要實(shí)現(xiàn)的具體功能,對(duì)控制系統(tǒng)的軟件部分進(jìn)行設(shè)計(jì)。采用面向?qū)ο蟮木幊谭椒?在Delphi 7.0環(huán)境下,基于SPComm第三方控件,設(shè)計(jì)了上位機(jī)與檢測(cè)節(jié)點(diǎn)、上位機(jī)與電動(dòng)推桿驅(qū)動(dòng)器的串口通信,完成了彎矩自動(dòng)加載系統(tǒng)的操作界面和控制程序的設(shè)計(jì)。最后,對(duì)整個(gè)系統(tǒng)進(jìn)行現(xiàn)場(chǎng)安裝、試驗(yàn)、拆卸,結(jié)果表明,該電桿彎矩自動(dòng)加載系統(tǒng)可以有效實(shí)現(xiàn)彎矩的自動(dòng)加載和卸載,現(xiàn)場(chǎng)裝拆方便,操作簡(jiǎn)單,達(dá)到了預(yù)期效果。
[Abstract]:Pile foundation is one of the commonly used foundation forms in transmission and distribution engineering structure. It belongs to underground concealed engineering, and the construction technology is relatively complex. Therefore, it is directly related to the safety of the whole pile foundation project. Therefore, it is of great significance to check the quality of pile foundation. At present, pile foundation testing at home and abroad is mainly aimed at pile bearing capacity and pile integrity. But in power system, it is not enough to check the bearing capacity and pile integrity of tower foundation. In the coastal area of our country, when typhoon comes, a large number of poles fall down. One of the main reasons is that there are defects in the construction of pole foundation, which can not resist the bending moment of wind force on the foundation. Therefore, it is necessary to detect the overturning moment of pole foundation. Therefore, in this paper, combining with the project of Fuzhou University and Fujian Electric Power Research Institute, "the development of measuring and controlling system of electric pole test device", a kind of convenient operation is put forward by taking the linear pole tower (without pulling wire) in the distribution network line as the research object. Safe and reliable automatic loading system of pole wind load bending moment. By constructing hardware platform and software design, the design of pole bending moment automatic loading system based on PC is realized. Firstly, based on the equivalent bending moment, the wind load of the conventional pole is modeled, and the calculation method of the wind load and the limit value of the wind load on the conventional pole are given. It lays a theoretical foundation for the design of automatic bending moment loading system. Secondly, the load mechanism model of pole bending moment is put forward, and the mechanical design of the loading mechanism is completed through the mechanical optimization of the four aspects of the moment loading mechanism, and on this basis, the testing node and the power and control device are added to the loading mechanism. The overall design scheme of the bending moment automatic loading system is put forward in this paper, the electric push rod is chosen as the power device of moment loading, the electric push rod is controlled directly by the upper computer, and three detecting nodes are set up on the mechanism. Thus, the hardware platform of the control system is built. Thirdly, the software part of the control system is designed based on the concrete function of the automatic loading system of pole bending moment. The serial communication between the upper computer and the detecting node, the upper computer and the electric push rod driver is designed based on the third party control of SPComm in the environment of Delphi 7.0 by using the object-oriented programming method. The operation interface and control program of the bending moment automatic loading system are designed. Finally, the field installation, test and disassembly of the whole system are carried out. The results show that the automatic loading system can effectively realize the automatic loading and unloading of the bending moment, and it is convenient to install and disassemble in the field, and the operation is simple, and the expected effect is achieved.
【學(xué)位授予單位】：福州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM75

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