加勁鋼管混凝土柱基礎受力模式分析｜國立中央大學博碩士論文系統

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研究生：	張家彰 Chia-Chang Chang
論文名稱：	加勁鋼管混凝土柱基礎受力模式分析 Load distribution model for stiffened concrete-filled tube base connections
指導教授：	許協隆 Hsieh-Lung Hsu
口試委員:
學位類別：	碩士 Master
系所名稱：	工學院 - 土木工程學系 Department of Civil Engineering
畢業學年度：	92
語文別：	中文
論文頁數：	96
中文關鍵詞：	鋼管混凝土、柱基礎設計
外文關鍵詞：	column base design, concrete-filled tube
相關次數：	點閱：7 下載：0
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本研究擬對CFT柱與基礎接合之承載行為進行探討，並針對二年前實驗中所收集之實驗資訊，進行完整分析，以推導合理之力學分析模式，藉以發展可行之柱基礎接合細部設計，並將量測資料與推導之受力模式進行比對，以驗證力學分析模型之正確性，以利工程界之應用。
研究結果顯示，柱體埋入基礎段加勁對於基礎混凝土的側向承壓有重大影響。當柱體埋入基礎段加勁，其應變分佈呈現線性單曲率。在水平剪力作用下，其力量若大於基礎混凝土對柱體的承壓強度時，會使得基礎內對柱體混凝土側向承壓處先行破壞。交互關係曲線具有兩個不同的區域，分別為柱體對基礎混凝土承壓破壞與柱底板與錨定螺桿聯合作用的破壞，在不同的組合載重下會有不同的破壞機制。

This study is focused on the development and evaluation of analytical model of concrete-filled tube (CFT) base connection subjected to seismic load. Experimental information is used to establish the load distribution model and to calibrate the corresponding coefficients. It is observed that the base connection with stiffened encased depth sustained high lateral load. It is also found from test result calibrations that the concrete bearing strengths for CFT with and without stiffened encased depths were different. A modified model for concrete bearing strength calculation was thus proposed in this study to better correlate the test results and the analytical simulations. Finally, a design procedure for CFT base connection fabrication is proposed for engineering practices.

I
目錄......................................................................................................... I
表目錄...................................................................................................... IV
圖目錄........................................................................................................V
照片目錄................................................................................................. VII
第一章緒論............................................................................................ 1
1.1 研究動機與目的...........................................................................1
1.2 研究方向與內容...........................................................................2
第二章文獻回顧.....................................................................................5
2.1 鋼管混凝土...................................................................................5
2.1.1 相關研究.............................................................................5
2.1.2 相關規範.............................................................................6
2.1.2.1 美國ACI 規範..........................................................6
2.1.2.2 美國AISC-LRFD 規範............................................7
2.1.2.3 日本AIJ 規範...........................................................9
2.2 錨定螺栓.....................................................................................12
2.2.1 相關研究...........................................................................12
2.2.2 鋼柱錨定螺栓設計...........................................................14
2.3 鋼柱底板.....................................................................................15
2.3.1 相關研究...........................................................................15
2.3.2 相關規範...........................................................................15
2.3.2.1 AISC-ASD 規範.......................................................16
2.3.2.2 AISC-LRFD 規範....................................................17
2.4 柱基礎組合.................................................................................18
2.4.1 相關研究...........................................................................18
II
第三章未加勁與加勁鋼管混凝土柱基礎之比較..............................20
3.1 概述..............................................................................................20
3.1.1 錨定螺栓接合機制............................................................20
3.1.2 埋入端混凝土承壓機制....................................................21
3.1.3 柱底板上受混凝土承壓機制............................................22
3.2 未加勁鋼管混凝土柱基礎強度分析.........................................22
3.2.1 鋼管混凝土柱試體實驗資訊............................................22
3.2.2 鋼管混凝土柱基礎試體分析............................................23
3.3 加勁鋼管混凝土柱基礎強度分析.............................................24
第四章加勁鋼管混凝土柱基礎受力模式分析..................................25
4.1 材料應力應變關係組成律..........................................................25
4.1.1 混凝土................................................................................25
4.1.2 錨定螺桿............................................................................26
4.2 受力模式之建立..........................................................................26
4.2.1 混凝土對柱體承壓強度....................................................26
4.2.1.1 第一階段之混凝土應力..........................................27
4.2.1.2 第二階段之混凝土應力..........................................28
4.2.2 底板與錨定螺桿................................................................30
4.2.2.1 底板的承壓機制CASE1 ........................................31
4.2.2.2 底板的承壓機制CASE2 ........................................35
4.2.2.3 底板的承壓機制CASE3 ........................................40
4.2.2.4 底板的承壓機制CASE4 ........................................46
4.3 基礎破壞準則..............................................................................51
第五章加勁鋼管混凝土柱基礎強度驗證與設計..............................53
5.1 實驗驗證......................................................................................53
III
5.1.1 試體資料...........................................................................53
5.1.2 實驗量測資訊與力學模型比較.......................................53
5.1.2.1 概述..........................................................................53
5.1.2.2 實驗與受力模式比較..............................................53
5.2 設計建議......................................................................................55
5.2.1 柱基礎交互曲線................................................................55
5.2.2 繪製柱基礎交互曲線........................................................56
5.2.3 交互曲線形狀探討............................................................59
第六章結論與建議..............................................................................60
6.1 結論.............................................................................................60
6.2 建議.............................................................................................61
參考文獻...................................................................................................62
附表.......................................................................................................... 65
附圖.......................................................................................................... 70
附照片...................................................................................................... 95
IV
表目錄
表5.1 試體尺寸表....................................................................................65
表5.2 試體配置表...................................................................................65
表5.3 混凝土材料試驗結果...................................................................66
表5.4 錨定螺桿材料試驗結果...............................................................66
表5.5 S05 基礎內各受力情形................................................................67
表5.6 S10 基礎內各受力情形................................................................68
表5.7 S15 基礎內各受力情形................................................................69

                                

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