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潘 立

（中國(guó)建筑科學(xué)研究院建筑結(jié)構(gòu)研究所，北京 100013）

 

[摘要] 應(yīng)用高強(qiáng)材料置換混凝土墻體表層，提高其組合截面的折算平均強(qiáng)度，可增大這些被加固墻體的受壓與受剪承載力。通過(guò)多片等截面置換表層加固墻體的軸壓、剪壓試驗(yàn)，對(duì)該加固方法的效果進(jìn)行了驗(yàn)證。試驗(yàn)研究表明，各墻體試件的設(shè)計(jì)承載力可根據(jù)《混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范》（GB 50010—2010）的方法計(jì)算確定，加固前后的延性無(wú)明顯變化，《混凝土結(jié)構(gòu)加固設(shè)計(jì)規(guī)范》（GB 50367—2006）中的相應(yīng)限制可適當(dāng)放松，所述結(jié)果可供混凝土結(jié)構(gòu)加固改造設(shè)計(jì)參考。

[關(guān)鍵詞] 高強(qiáng)置換材料；表層置換；混凝土剪力墻；組合截面；疊合界面；折算平均強(qiáng)度；變形協(xié)調(diào)

中圖分類(lèi)號(hào)：TU375-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2012)10-0139-05

 

Pan Li

（Institute of Building Structures, China Academy of Building Research, Beijing 100013, China）

 

Abstract: For the-reinforced concrete wall whose concrete strength is obviously lower than that of design demand, it could be repaired by the surface layer replaced with the high strength materials to increase the average conversion strength of compression and shear of the compound section. Based on tests of wall specimens compressed previously then added with shear force, actual effect of the strengthening method is checked carefully. It is found that capacities of those repaired walls can be determined according to Code for design of concrete structures (GB 50010-2010), the ductility is nearly not decrease after reinforced. The relative restrictions in Design code for strengthening concrete structure (GB 50367-2006) should be loosed appropriately, and the mentioned results can be as the useful reference for reconstruction design of reinforced concrete structures.

Keywords: high strength materials for section replace; surface layer replace; reinforced concrete shear wall; compound section; composite interface; average conversion strength; coordinate deformation

作者簡(jiǎn)介：潘立，教授級(jí)高級(jí)工程師，Email：panli535482@sohu.com。

 

［1］GB 50011-2010 建筑抗震設(shè)計(jì)規(guī)范［S］. 北京：中國(guó)建筑工業(yè)出版社，2010.

［2］中國(guó)建筑科學(xué)研究院建筑結(jié)構(gòu)研究所. 高強(qiáng)材料置換混凝土柱、墻外周截面加固方法的研究［R］. 2011.

［3］GB/T 50448-2008 水泥基灌漿材料應(yīng)用技術(shù)規(guī)范［S］.北京：中國(guó)計(jì)劃出版社，2008.

［4］GB 50010-2010 混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］.北京：中國(guó)建筑工業(yè)出版社，2011.

［5］JGJ 101-96 建筑抗震試驗(yàn)方法規(guī)程［S］.北京：中國(guó)建筑工業(yè)出版社，1997.

［6］GB 50376-2006 混凝土結(jié)構(gòu)加固設(shè)計(jì)規(guī)范［S］. 北京：中國(guó)計(jì)劃出版社，2006.