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    蘇州混凝土水泥制品研究院有限公司

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    第一期

    鋼渣粉部分替換不同水泥對混凝土力學性能的影響
    鋼渣粉部分替換不同水泥對混凝土力學性能的影響
    • 王飛虎,馮 勇,晉 強,何金春
    2016年第1期
    摘要
    引用本文
    摘 要:為了研究鋼渣粉對不同水泥的影響,用鋼渣粉部分替換普通硅酸鹽水泥鋼渣混凝土、高抗硫酸鹽硅酸鹽水泥鋼渣混凝土、快硬硫鋁酸鹽水泥鋼渣混凝土中的水泥,比較使用這三種水泥鋼渣混凝土3d、7d和28d的抗折、抗壓強度的發展變化。試驗結果表明:普通硅酸鹽水泥、高抗硫酸鹽硅酸鹽水泥、快硬硫鋁酸鹽水泥鋼渣混凝土的鋼渣粉最優摻量分別是20%、10%、10%,合理摻量范圍一般不應超過30%、30%、20%。 Abstract: To study the effect of steel slag on different cement, the development varies for flexural strength and compressive strength of three kinds of cement steel concrete in 3d, 7d and 28d are compared which include slag powder partly replaced cement from Portland cement steel slag concrete, high sulfate resistance Portland cement steel slag concrete, rapid hardening sulphoaluminate cement slag concrete. The results show that, the optimal dosages of steel slag powder from ordinary Portland cement, high sulfate resistance Portland cement, rapid hardening sulphoaluminate cement steel slag concrete are 20%, 10%, 10%, and a reasonable dosage range should not exceed 30%, 30%, 20%.
    冷卻水自動循環系統在大體積混凝土施工中的應用研究
    冷卻水自動循環系統在大體積混凝土施工中的應用研究
    • 陳國勝
    2016年第1期
    摘要
    引用本文
    摘 要:傳統的大體積混凝土冷卻水循環采用人工值守的方式,冷卻循環水連續不間斷運行的可靠性低、難于精確控制混凝土內部的溫度,而且成本高,效果差。本文針對南盤江大橋拱座大體積混凝土施工,提出了冷卻水自動循環系統,很好地控制了大體積混凝土澆注時的內外溫差,減少了裂縫,取得了很好的效果。 Abstract: Cooling water circulation of traditional mass concrete is used by artificial unattended, continuous uninterrupted operation for cooling water circulation with low reliability is difficult to accurate control internal temperature in concrete, the cost is high and effect is poor. Cooling water automatic circulation system of mass concrete construction for Nanpan river bridge abutment is proposed, which can control internal and external temperature as mass concrete pouring, reduce the cracks and have good effects.
    超高程泵送C60高強混凝土的配合比優化及施工
    超高程泵送C60高強混凝土的配合比優化及施工
    • 焦立穎
    2016年第1期
    摘要
    引用本文
    摘 要:針對通州運河核心區商務公寓工程中的C60高強混凝土的超高程泵送要求,從優選原材料入手,進行了混凝土配合比的設計及優化,對泵機所需的壓力進行了驗算,并對泵管的選擇、泵管的布置及泵送施工過程進行了分析,成功地將C60高強混凝土泵送至241m處。 Abstract: Aiming ultra-high pumping requirement of C60 high-strength concrete in Tongzhou canal core zone business apartment, the design and optimization of concrete mix proportion is carried out. The checking for pump machine pressure is calculated, selection, layout and construction of pumping pipe are analyzed in detailed to successfully lift C60 high-strength concrete pumping to 241m.
    基礎剛度對超長混凝土結構溫度應力的影響研究
    基礎剛度對超長混凝土結構溫度應力的影響研究
    • 王 祥,邵永健
    2016年第1期
    摘要
    引用本文
    摘 要:為研究基礎剛度對超長混凝土結構溫度應力的影響,結合實際工程,運用ABAQUS有限元軟件,對蘇州某超長混凝土結構的溫度效應進行了分析。分析表明,與柱底嵌固假定模型的分析結果相比,考慮基礎剛度后,樓層板中溫度應力明顯降低,底層柱底彎矩明顯降低,分析結果更加接近實際,且有利于溫度效應的控制;同時提出了有效減小溫度應力影響的措施。 Abstract: The influence of foundation stiffness on temperature stress of super-long concrete structure is studied, combined with practical engineering project, the analysis of a super-long concrete structure in Suzhou on temperature stress is carried out by ABAQUS software. The results show that, analysis results is comprised with assumed model of block structure, temperature stress in floor plant after considering foundation stiffness is obviously decreased, the moment for the bottom of column base is also clearly decreased, which is close to reality and beneficial to control the temperature effect. At the same time, the measures which can effectively reduce the impact of temperature stress are provided.
    帶SRC異形十字邊框柱剪力墻抗震性能分析
    帶SRC異形十字邊框柱剪力墻抗震性能分析
    • 蔡新江1,2,盧 榮1,田石柱1,2
    2016年第1期
    摘要
    引用本文
    摘 要:為研究帶SRC異形十字邊框柱剪力墻的抗震性能,本文基于開源分析程序Opensees,采用纖維梁單元對縮尺比為1:2.5的模型結構進行靜力彈塑性分析和滯回性能分析,采用直接在截面層次上定義非線性剪切恢復力的方法來模擬纖維截面的剪切效應。得到構件的Pushover曲線、滯回曲線、等效粘滯阻尼系數、滯回環面積以及在不同軸壓比情況下邊框柱、剪力墻承擔的剪力分配情況。分析結果表明,剪力墻承擔大約75%的剪力,相比于RC剪力墻,帶SRC異形邊框柱剪力墻的延性、最大抗剪承載力、極限位移以及耗能能力均有不同程度的提高,設置SRC異形邊框柱有效地提高了結構在地震作用下的抗震性能。 Abstract: In order to study the seismic properties of shear wall with SRC special-shaped cross columns frame, push-over analysis and hysteretic analysis of fiber element on model structure with a scale rate of 1:2.5 is carried out by open source analysis program Opensees in this paper, shear effects of fiber section in section level is simulated through directly nonlinear shear recovery force method. Push-over curves, hysteretic curves, equivalent damping coefficient, area of hysteretic loop and columns and shear wall bearing shear under different axial compression ratio are obtained. The analysis results show that, shear wall bears 75% shear which is compared with RC shear wall, the ductility, maximum shear, ultimate displacement and energy dissipation capacity can improve in different degrees, the seismic behavior of structure can be effectively improved by setting SRC special-shaped column in the role of seismic.
    裝配式框架結構節點研究現狀與展望
    裝配式框架結構節點研究現狀與展望
    • 顏 軍,羅海艷,郎 ?
    2016年第1期
    摘要
    引用本文
    摘 要:綜合國內外裝配式框架結構節點的研究成果,重點圍繞裝配式鋼梁-混凝土柱框架節點及裝配式混凝土框架節點的構造形式及相應的研究進展、存在問題進行了詳細評述。為更好地推廣應用裝配式螺栓連接鋼梁-混凝土柱框架結構,提出了一種改進型節點連接方式,該節點由核心鋼板桶通過加勁肋與外圍鋼板帶組成,在不影響節點區箍筋布置的前提下,可增強節點區的耗能能力及抗剪承載力。同時,內置鋼板桶及外圍鋼板帶可方便利用端板螺栓與鋼梁進行連接,確保節點的工作性能。最后提出了針對裝配式框架節點開展抗震性能及研究方法的展望。 Abstract: Comprehensive domestic and foreign research achievements of prefabricated frame structure joints, structural form of prefabricated steel beam-concrete column joints and prefabricated reinforced concrete frame joints, research progress and problems are carried out. In order to promote structural form of prefabricated bolt connection steel beam-concrete column frame structure, promoted joint connection is proposed. The core steel barrel and peripheral steel belt connected by ribbed stiffener can largely enhance the energy dissipation and shear capacity of joins. A bolted connection between steel beam and reinforced concrete column can be adopted which can ensure the joints working performance. Finally, expectations on prefabricated frame structure joints’ seismic behavior and design methods are raised.
    配置600MPa鋼筋部分預應力混凝土梁疲勞性能研究
    配置600MPa鋼筋部分預應力混凝土梁疲勞性能研究
    • 趙少偉1,2,高洪健1,趙文志3,李春明3
    2016年第1期
    摘要
    引用本文
    摘 要:為研究配置600MPa高強鋼筋的部分預應力混凝土梁構件的受力性能及適用性,對四根配置HRB600級鋼筋作為非預應力筋的有黏結與無黏結部分預應力混凝土梁分別進行靜載及疲勞試驗研究。結果表明:循環加載前梁體是否開裂對梁體混凝土的疲勞性能有明顯影響,非預應力高強鋼筋變形恢復能力沒有受到疲勞荷載作用影響,無黏結部分預應力混凝土梁和有黏結部分預應力混凝土梁的抗疲勞性能都較好,配置600MPa鋼筋的部分預應力混凝土梁能夠在實際工程中得到很好的應用。 Abstract: To study the the mechanical behavior and applicability of partial prestressed concrete beams with 600MPa grade high strength steels, static test and fatigue test of the four bonded or unbonded partial prestressed concrete with HRB600 non-prestressed tendons are carried out. The results indicate that the fatigue performance of beam body concrete beams will be significantly affected on cracks of beam before cyclic loading, displacement restoring capacity of non-prestressed high-strength steel bar have little affect on fatigue load. The fatigue properties of unbonded partial prestressed concrete and bonded partial prestressed concrete are both good, and partial prestressed concrete beams with 600MPa reinforced bar can be used well in practical engineering.
    纖維混凝土高溫性能及作用機理研究綜述
    纖維混凝土高溫性能及作用機理研究綜述
    • 張廣泰,陳 浩,郭 銳,令 芳,鄧洋洋
    2016年第1期
    摘要
    引用本文
    摘 要:在對國內外聚丙烯纖維、鋼纖維、鋼-聚丙烯混雜纖維和其他纖維混凝土的高溫殘余性能和抗爆裂研究成果進行綜述的基礎上,對作用機理進行了深入分析,并指出該領域中當前研究所存在的若干問題,對需要進一步研究的相關內容提出了建議。 Abstract: Basis on review of research on residual properties after high temperature and spalling resistance of polypropylene fiber, steel fiber, steel-polypropylene fiber and other fibers concrete at home and abroad, the mechanism of fiber concrete is deeply analyzed, the problems of current research in this field are pointed out. At the same time, recommendations for further research are proposed.
    凍融循環下不同纖維混凝土損傷模型研究
    凍融循環下不同纖維混凝土損傷模型研究
    • 陳升平,鮑 威
    2016年第1期
    摘要
    引用本文
    摘 要:選取普通混凝土、鋼纖維混凝土、聚丙烯纖維混凝土進行快速凍融循環試驗,研究了不同纖維混凝土凍融損傷的相關性能,根據損傷理論分析了纖維混凝土凍融損傷破壞的機理。根據試驗結果分析進行擬合,建立了基于相對動彈模衰減的不同纖維混凝土凍融損傷模型。研究分析和計算表明,不同的纖維對混凝土抗凍性都有較大的影響,摻有鋼纖維的混凝土抗凍性優于普通混凝土,摻有聚丙烯纖維的混凝土抗凍性最優;結合試驗數據進行比較分析發現模型采用二次多項式函數的擬合精度比指數函數的擬合精度更高。 Abstract: Ordinary concrete, steel fiber and polypropylene fiber concrete are selected to conduct the quick freeze-thaw test, the damage behavior of different fiber concretes in freeze-thaw is studied. The mechanism of damage from freeze-thaw on fiber concretes is analyzed. According to the results of the experiment, the fitting is carried out. And a model of freeze-thaw damage of different fiber concretes for relative dynamic elastic is established. Research and calculation indicate that different fibers has great influence on the frost-resistance of concrete, the frost-resistance of concrete with steel fiber reinforced concrete is better than ordinary concrete. However, the frost-resistance of concrete by adding polypropylene fiber is the best. And the quadratic function model has a higher fit accuracy as compared to the exponential function model.
    鋼纖維摻量對鋼纖維-鋼筋混凝土板抗低速沖擊性能影響研究
    鋼纖維摻量對鋼纖維-鋼筋混凝土板抗低速沖擊性能影響研究
    • 武 衛,秦 菱,張 超,張 勇,王建武
    2016年第1期
    摘要
    引用本文
    摘 要:鋼纖維混凝土大量應用于軍事防護工程以防御高速侵徹和爆炸沖擊,鋼纖維-鋼筋混凝土結構在低速沖擊作用下的性能表現是目前反恐安全和交通安全領域的重點研究對象,為此設計制作了兩種配筋率下的鋼纖維-鋼筋混凝土板,用落錘試驗儀模擬低速動荷載對試件抗沖擊性能的影響,通過摻加不同比例的鋼纖維,比對分析對低速沖擊破壞形態和荷載、位移和能量變化規律,得出鋼纖維摻量對鋼纖維-鋼筋混凝土板抗低速沖擊性能的影響。 Abstract: Steel fiber concrete is widely applied for defense high speed penetration and explosion shock in military protection engineering, performance of steel fiber-reinforced concrete structure is one of the key research objects in the field of counter-terrorism safety and traffic safety under the action of low-velocity impact, steel fiber-reinforced concrete plate with two kinds of reinforcement ratio is prepared, and influence on resistance properties of specimens is simulated to high rolling dynamic load by using the drop hammer test apparatus. Through adding different proportions of steel fiber, a comparative analysis on the changing law of the low-speed impact’s damage form, load, displacement and energy is given, the influence of steel fiber content on low-velocity impact resistance performance of steel fiber-reinforced concrete plate is obtained.
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