本文選題：波紋鋼腹板 + PBL剪力鍵��； 參考：《中南林業(yè)科技大學(xué)》2014年碩士論文

【摘要】：做為一種新型的鋼-混組合結(jié)構(gòu)梁橋,波紋鋼腹板結(jié)構(gòu)受力合理,美觀經(jīng)濟(jì)等諸多優(yōu)點(diǎn)使得該類橋有著廣闊的發(fā)展前景,但是目前我國(guó)對(duì)于該類橋的研究尚處于初級(jí)階段,雖然也取得了一些成績(jī),但還有很多問題值得進(jìn)一步探討。尤其是對(duì)于該類橋剪力鍵的研究更是少之又少,目前對(duì)于波紋鋼腹板頂?shù)装迮c波形鋼腹板的連接鍵計(jì)算,國(guó)內(nèi)沒有統(tǒng)一規(guī)范,基本參考河南省地方標(biāo)準(zhǔn)《公路波形鋼腹板預(yù)應(yīng)力混凝土箱梁橋設(shè)計(jì)規(guī)范》和國(guó)外規(guī)范。因此了解該類結(jié)構(gòu)剪力鍵的受力特點(diǎn),建立一套針對(duì)我國(guó)波紋鋼腹板橋梁的設(shè)計(jì)規(guī)范和方法是非常有必要的。 PBL剪力鍵是一種新型剪力鍵,和傳統(tǒng)的剪力鍵比較,該新型剪力鍵具有承載力大、延性好、加工制造簡(jiǎn)單、抗疲勞性能好等優(yōu)點(diǎn)。而中國(guó)目前對(duì)于該新型剪力鍵的設(shè)計(jì)還沒有統(tǒng)一的規(guī)范,基本借鑒日本規(guī)范,因此有待對(duì)比研究?jī)蓢?guó)規(guī)范優(yōu)缺點(diǎn)并探討其構(gòu)造性能以驗(yàn)證我國(guó)規(guī)范的合理性并對(duì)我國(guó)大跨徑波紋鋼腹板橋的PBL剪力鍵設(shè)計(jì)提供參考意見。本文以目前世界上跨徑最大的波紋鋼腹板橋梁——東寶新安大橋新建工程(88m+156m+88m波形鋼腹板PC連續(xù)箱梁)為工程背景,結(jié)合日本規(guī)范針對(duì)PBL剪力連接件進(jìn)行了一些研究,具體內(nèi)容如下： 1)系統(tǒng)介紹了波紋鋼腹板結(jié)構(gòu)的特點(diǎn),鋼材與混凝土之間的連接方式和種類并概括了國(guó)內(nèi)外研究現(xiàn)狀。 2)結(jié)合兩種日本方法按照明確的剪力連接鍵設(shè)計(jì)流程對(duì)東寶新安大橋PBL剪力連接件進(jìn)行了驗(yàn)算,驗(yàn)算過(guò)程可與我國(guó)驗(yàn)算方法進(jìn)行相互驗(yàn)證,為我國(guó)大跨波紋鋼腹板結(jié)構(gòu)的PBL剪力鍵設(shè)計(jì)提供對(duì)比和參考。 3)利用ANSYS構(gòu)造并分析了PBL剪力鍵的有限元計(jì)算模型并進(jìn)行參數(shù)分析,初步了解參數(shù)變化對(duì)該類剪力鍵受力影響。 4)將有限元參數(shù)分析結(jié)果和試驗(yàn)結(jié)果、各公式結(jié)果進(jìn)行了對(duì)比,明確了PBL剪力鍵各參數(shù)對(duì)PBL剪力鍵受力性能的影響以及采用有限元軟件對(duì)PBL剪力鍵進(jìn)行分析的準(zhǔn)確性。
[Abstract]:As a new type of steel-concrete composite beam bridge, the corrugated steel web structure has many advantages, such as reasonable force, beautiful economy and so on. However, the research of this kind of bridge is still in the primary stage in our country. Although some achievements have been made, but there are still many issues worth further discussion. Especially for this kind of bridge shear bond research is very rare. At present, there is no uniform specification for the calculation of the connection key between corrugated steel web top and bottom plate and corrugated steel web plate. The design code of prestressed concrete box girder bridge with corrugated steel web plate of highway is referred to the local standard of Henan Province and the foreign code. Therefore, it is necessary to understand the mechanical characteristics of this kind of structural shear keys and to establish a set of design specifications and methods for corrugated steel web bridges in China. The PBL shear bond is a new type of shear bond, which is compared with the traditional shear key. The new shear bond has the advantages of large bearing capacity, good ductility, simple processing and good fatigue resistance. At present, China does not have a unified code for the design of the new shear bond. It basically draws lessons from the Japanese code. Therefore, the merits and demerits of the codes of the two countries need to be compared and discussed to verify the rationality of the codes in China and to provide reference for the PBL shear bond design of the long-span corrugated steel web plate bridges in China. In this paper, the PC continuous box girder with corrugated steel webs, which is the largest corrugated steel web bridge with the largest span in the world at present, is the newly built project of Dongbao Xinan Bridge. The PC continuous box girder with corrugated steel webs (88m 156m 88m) is used as the engineering background, and some researches on PBL shear connectors are carried out in combination with the Japanese Code. The main contents are as follows: 1) the characteristics of corrugated steel web structure are introduced systematically. The connection modes and types between steel and concrete and the current research situation at home and abroad are summarized. 2) the PBL shear connections of Dongbao Xinan Bridge are checked and calculated in combination with two Japanese methods according to the clear design process of shear connection keys. The process of checking calculation can be mutually verified with the method of checking calculation in our country. This paper provides a comparison and reference for PBL shear bond design of large span corrugated steel web structure in China. 3) the finite element calculation model of PBL shear bond is constructed and analyzed by ANSYS and its parameters are analyzed. The effect of parameter change on the stress of this kind of shear bond is preliminarily understood. 4) the results of finite element analysis and test are compared with the results of each formula. The influence of the parameters of PBL shear bond on the mechanical properties of PBL shear bond and the accuracy of the analysis of PBL shear bond with finite element software are clarified.
【學(xué)位授予單位】：中南林業(yè)科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U448.216;U441

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