【摘要】：如今,雖然水下懸浮隧道在世界上還沒有完成一項(xiàng)具體的工程,但是由于它在深水域跨越方面的綜合優(yōu)勢,專家學(xué)者們對于水下懸浮隧道相關(guān)方面的研究也越來越廣泛。遺憾的是,水下懸浮隧道錨索松弛-張緊過程中的動(dòng)態(tài)張力問題研究的甚少,而錨索的沖擊張力對水下懸浮隧道的破壞卻很大,因此,希望本文對錨索的動(dòng)態(tài)張力研究可為水下懸浮隧道的后期研究提供一定的參考價(jià)值。本文從水下懸浮隧道錨索的靜態(tài)、動(dòng)態(tài)計(jì)算及影響因素三個(gè)方面展開了討論。主要內(nèi)容如下:(1)從理論概述和結(jié)構(gòu)分析兩大方向簡述了水下懸浮隧道在國內(nèi)外的各方面的探究情況。(2)對錨索的四種布置方法和應(yīng)力波的基本理論展開了闡述,其中,介紹了應(yīng)力波的形成條件和相關(guān)的傳播方法。(3)分別對錨索的靜態(tài)構(gòu)形示意圖和動(dòng)態(tài)構(gòu)形示意圖進(jìn)行了受力分析,得到了錨索的靜、動(dòng)態(tài)構(gòu)形圖,然后利用哈密頓原理和能量法分析了動(dòng)態(tài)作用下錨索所做的功。(4)根據(jù)對錨索做功的總結(jié),推導(dǎo)了水下懸浮隧道錨索的非線性運(yùn)動(dòng)方程,同時(shí)還考慮了錨索的外部作用力。接著運(yùn)用伽遼金方法對此運(yùn)動(dòng)方程進(jìn)行了化簡,再利用MATLAB軟件編制程序求解方程,描繪出了錨索運(yùn)動(dòng)響應(yīng)曲線圖。(5)對錨索的端部簡諧激勵(lì)和應(yīng)變的傳播進(jìn)行了分析,接著就錨索松弛、松弛-張緊和張緊三種情況分別進(jìn)行了計(jì)算分析。其中,還初步地探討了錨索-管體可能會發(fā)生參數(shù)共振運(yùn)動(dòng)的限制條件。(6)展開了錨索的位置、激勵(lì)頻率、激勵(lì)幅值及它的長度等因素對錨索動(dòng)態(tài)張力影響的探討。
[Abstract]:At present, although the underwater suspended tunnel has not completed a specific project in the world, but because of its comprehensive advantages in deep water crossing, experts and scholars have more and more research on the relevant aspects of underwater suspended tunnel. Unfortunately, there is little research on dynamic tension in the process of loose-tensioning of anchor cable in underwater suspended tunnel, but the impact tension of anchor cable has great damage to underwater suspended tunnel. It is hoped that the study of dynamic tension of anchor cable in this paper can provide some reference value for the later study of underwater suspended tunnel. In this paper, the static state, dynamic calculation and influencing factors of anchor cable in underwater suspension tunnel are discussed. The main contents are as follows: (1) the research situation of underwater suspended tunnel at home and abroad is briefly described from two aspects: (1) the theoretical overview and structural analysis. (2) the four arrangement methods of anchor cable and the basic theory of stress wave are expounded, among which, The forming conditions of stress wave and the related propagation methods are introduced. (3) the static configuration diagram and dynamic configuration diagram of anchor cable are analyzed respectively, and the static and dynamic configuration diagram of anchor cable are obtained. Then the work of anchor cable under dynamic action is analyzed by using Hamiltonian principle and energy method. (4) according to the summary of work done by anchor cable, the nonlinear motion equation of anchor cable in underwater suspension tunnel is derived, and the external force of anchor cable is also considered. Then, the equations of motion are simplified by Galerkin method, and then solved by MATLAB software, and the curve of response of cable motion is described. (5) the harmonic excitation and the propagation of strain at the end of the cable are analyzed. Then the relaxation of anchor cable, relaxation-tensioning and tensioning are calculated and analyzed respectively. Among them, the limiting conditions of the possible parametric resonance motion of the cable and tube are discussed. (6) the influence of the position of the cable, the excitation frequency, the amplitude of the excitation and the length of the cable on the dynamic tension of the cable is discussed.
【學(xué)位授予單位】：聊城大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U459.5

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