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    蘇州混凝土水泥制品研究院有限公司

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    發布時間:2020-01-06 00:00:00
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    第二期

    內襯HDPE片材大口徑鋼筋混凝土排水管檢測試驗初探
    內襯HDPE片材大口徑鋼筋混凝土排水管檢測試驗初探
    • 呂根喜1,高 武2,毛海明3,江曉華3,章擁軍3
    2021年第2期
    摘要
    引用本文
    摘 ? 要:基于工程實際要求,對內襯高密度聚乙烯(HDPE)片材化學物理性能及內襯HDPE片材鋼筋混凝土管節進行了試驗研究,包括內襯HDPE單鍵和多鍵的抗拉拔試驗、管節接頭抗內水壓和外水壓試驗、HDPE片材覆貼接頭抗外水壓試驗、外壓荷載試驗, 可為HDPE片材在鋼筋混凝土排水管中的應用和推廣提供參考。 Abstract: Based on the actual requirements of project, ?the chemical and physical properties tests of HDPE sheets and pipe section tests of large diameter HDPE lining reinforced concrete sewer pipes are carried out, including single and multiple bond pull-out tests of HDPE lining, internal and external water pressure tests of pipe joints, external water pressure test of concrete sewer pipe joint with HDPE sheet, interface and external pressure load tests, which can provide a reference for the application and promotion of HDPE sheet in the corrosion resistance of reinforced concrete sewer pipe.
    呂根喜,高武,毛海明,等.內襯HDPE片材大口徑鋼筋混凝土排水管檢測試驗初探[J].混凝土與水泥制品,2021(2):37-43. LYU G?X,GAO W,MAO H?M,et?al.Tests of Large Diameter HDPE Lining Reinforced Concrete Sewer Pipes[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):37-43.
    PHC管樁抱箍式機械連接軸拉承載性能數值分析
    PHC管樁抱箍式機械連接軸拉承載性能數值分析
    • 安增軍1,2,賀武斌3,劉佳龍4,戴 亞1,2
    2021年第2期
    摘要
    引用本文
    摘 ?要:基于ABAQUS有限元軟件,模擬分析了PHC管樁抱箍式機械連接軸拉承載性能。結果表明:抱箍式機械連接的零部件均可滿足PHC管樁樁身軸拉設計值要求;抱箍式機械連接軸拉力傳力路線不直接,位移變形相對大;零部件應力分布相對不均勻,六角高強螺釘與U型抱箍卡之間存在先后屈服的現象。建議將U型抱箍卡上的六角高強螺釘孔設置為橢圓孔,預留一定的滑動空間,避免螺釘發生材料屈服現象。 Abstract: Based on ABAQUS, the axial tension bearing capacity of hoop type mechanical connection of PHC pile is analyzed by finite element method. The results show that the mechanical parts of hoop type connection joint can meet the bearing requirements of PHC piles axial tension design value; the tension transmission route of hoop type mechanical connection shaft is not direct, and the displacement deformation is relatively large; the stress distribution of parts is relatively uneven, and there is the phenomenon of yielding successively between hexagon high strength screw and U-shaped hoop clamp. It is suggested that the hexagon high-strength screw hole on the U-type hoop should be set as an ellipse hole, and a certain sliding space should be reserved to avoid the material yield phenomenon of the screw.
    安增軍,賀武斌,劉佳龍,等.PHC管樁抱箍式機械連接軸拉承載性能數值分析[J].混凝土與水泥制品,2021(2):44-48. AN Z J,HE W B,LIU J L,et al.Numerical Analysis of Axial Tension Bearing Capacity of Hoop Type Mechanical Connection of PHC Piles[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):44-48.
    大跨度先張法預應力混凝土雙T板的生產
    大跨度先張法預應力混凝土雙T板的生產
    • 劉洋,高名揚,任端城,袁繼東,王靖鑫
    2021年第2期
    摘要
    引用本文
    摘 ? 要:大跨度先張法預應力混凝土雙T板具有跨度大、結構性能好、成本低、整體性好等特點,被廣泛應用于工業建筑。結合實際工程,介紹了大跨度雙T板的生產工藝,并重點闡述了鋼絞線張拉、預應力控制、混凝土澆筑和養護工藝,可為大跨度雙T板的生產應用提供參考。 Abstract: Large-span pre-tensioned prestressed concrete double-T slabs have the advantages of large span, good structural performance, low cost, good integrity and are widely used in the industrial buildings. Combined with the practical engineering, the production technology of the double-T slab is introduced, and the steel strand tension, prestress control, concrete pouring and maintenance technology are described in detail, which can provide a reference for the production and application of long-span double-T slabs.
    劉洋,高名揚,任端城,等.大跨度先張法預應力混凝土雙T板的生產[J].混凝土與水泥制品,2021(2):49-50,60. LIU Y,GAO M Y,REN D C,et al.Manufacture of Large-span Pre-tensioned Prestressed Concrete Double-T Slabs[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):49-50,60.
    纖維對含粗骨料超高性能混凝土高溫性能的影響
    纖維對含粗骨料超高性能混凝土高溫性能的影響
    • 錢云峰1,楊鼎宜1,2,夏旸昊1,陸仕祥3,王彤章1
    2021年第2期
    摘要
    引用本文
    摘 ? 要:為了探究改善超高性能混凝土(UHPC)高溫性能的措施,從力學性能、質量損失、超聲檢測等方面研究了纖維(不摻纖維、單摻鋼纖維、混摻鋼纖維與合成纖維)對UHPC高溫性能的影響。結果表明:當纖維摻量增加時,UHPC的工作性與抗壓強度均隨之下降,抗折強度則先升后降;隨著目標溫度的升高,UHPC的殘余抗壓強度先升后降,損傷逐步加重;纖維的加入可以延緩裂縫的發展,混摻鋼纖維與合成纖維可以有效改善UHPC高溫爆裂行為。 Abstract: In order to explore the measures to improve the high temperature performance of ultra-high performance concrete(UHPC), the influence of fiber(non-fiber, single steel fiber, mixed steel fiber and synthetic fiber) on the high temperature performance of UHPC was studied from the aspects of mechanical properties, mass loss and ultrasonic testing. The results show that when the fiber content increases, the workability and compressive strength of UHPC decrease, while the flexural strength increases first and then decreases. With the increase of the target temperature, the residual compressive strength increases first and then decreases. The addition of fiber can delay the development of cracks, and the mixing of steel fiber and synthetic fiber can effectively improve the high temperature burst behavior of UHPC.
    錢云峰,楊鼎宜,夏旸昊,等.纖維對含粗骨料超高性能混凝土高溫性能的影響[J].混凝土與水泥制品,2021(2):51-56. QIAN Y F,YANG D Y,XIA Y H,et al.Influence of Fiber on High Temperature Performance of Ultra-high Performance Concrete With Coarse Aggregate[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):51-56.
    聚丙烯-玄武巖混雜纖維對陶?;炷亮W性能的影響
    聚丙烯-玄武巖混雜纖維對陶?;炷亮W性能的影響
    • 朱紅兵1,施旭剛1,李秀2
    2021年第2期
    摘要
    引用本文
    摘 ? 要:對摻加聚丙烯-玄武巖混雜纖維的陶?;炷吝M行了抗壓強度、抗折強度、劈裂抗拉強度試驗,得到了混雜纖維對陶?;炷亮W性能的影響規律。結果表明:混雜纖維摻量為0.2%時,陶?;炷恋目箟簭姸?、劈裂抗拉強度、抗折強度提升幅度最大,分別較基準組提高了11.21%、30.73%、15.26%,但摻量過大時陶?;炷恋牧W性能會下降,甚至出現負效應;聚丙烯纖維與玄武巖纖維的混雜比為2∶1時,其對陶?;炷恋脑鰪娦Ч^好;混雜纖維能增強陶?;炷恋捻g性,對抗折強度和抗拉強度提升效果明顯,對抗壓強度提升效果較小。 Abstract: The compressive strength, flexural strength and splitting tensile strength tests of ceramsite concrete with polypropylene-basalt hybrid fiber were carried out, and the influence rules of hybrid fiber on the mechanical properties of ceramsite concrete were obtained. The results show that when the hybrid fiber content is 0.2%, the compressive strength, splitting tensile strength and flexural strength of ceramsite concrete have the largest increase, which are increased by 11.21%, 30.73% and 15.26% respectively compared with blank group, but when the hybrid fiber content is too high, the mechanical properties of ceramsite concrete will be decreased or even have negative effect. When the mixing ratio of polypropylene fiber and basalt fiber is 2∶1, the reinforcement effect of ceramsite concrete is great. The toughness of ceramsite concrete can be enhanced by adding hybrid fiber, and the tensile strength and flexural strength are obviously improved, but the effect of improving compressive strength is small.
    朱紅兵,施旭剛,李秀.聚丙烯-玄武巖混雜纖維對陶?;炷亮W性能的影響[J].混凝土與水泥制品,2021(2):57-60. ZHU H B,SHI X G,LI X.Influence of Polypropylene-basalt Hybrid Fiber on Mechanical Properties of Ceramsite Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2)::57-60.
    基于振動攪拌技術的碳纖維接地導電混凝土制備及性能研究
    基于振動攪拌技術的碳纖維接地導電混凝土制備及性能研究
    • 程育林1,周 遷1,劉宇彬1,李興澤1,馮新軍2
    2021年第2期
    摘要
    引用本文
    摘 ? 要:采用振動攪拌技術,選取碳纖維為導電相制備用于桿塔基礎接地的導電混凝土,并對碳纖維導電混凝土的振動攪拌工藝參數、配合比和接地性能進行了試驗研究。結果表明:采用振動攪拌技術制備碳纖維導電混凝土的最優工藝參數組合為:干拌時間10 s、濕拌時間70 s、加碳纖維攪拌時間60 s;最優配合比為:碳纖維摻量0.3%、水灰比0.46、單位用水量200 kg、砂率36%;此工藝參數和配合比下,導電混凝土的28 d抗壓強度為46.3 MPa,抗折強度為5.7 MPa,28 d電阻率為2.09 Ω·m,導電性能優良,滿足輸電線路桿塔基礎接地的性能要求。 Abstract: Based on the vibration mixing technology, carbon fiber was selected as the conductive phase to prepare the conductive concrete for tower foundation grounding. The vibration mixing process parameters, mix proportion and grounding performance of carbon fiber conductive concrete were studied. The results show that the best combination of process parameters for the preparation of carbon fiber conductive concrete are: dry mixing time of 10 s, wet mixing time of 70 s and carbon fiber mixing time of 60 s. The best mix proportion is: carbon fiber content of 0.3%, water cement ratio of 0.46, unit water ues of 200 kg, sand ratio of 36%. Under this process parameter and mix proportion, the 28 d compressive strength and bending strength of the conductive concrete are 46.3 MPa and 5.7 MPa respectively, and the 28 d resistivity of the conductive concrete is 2.09 Ω·m, which has excellent electrical conductivity and meets the requirements of the grounding performance of the transmission line tower foundation.?
    程育林,周遷,劉宇彬,等.基于振動攪拌技術的碳纖維接地導電混凝土制備及性能研究[J].混凝土與水泥制品,2021(2):61-64,100. CHENG Y L,ZHOU Q,LIU Y B,et al.Study on Preparation and Performance of Carbon Fiber Grounded Conductive Concrete Based on Vibration Mixing Technology[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):61-64,100.
    粉煤灰纖維架構彈性保溫隔熱材料的研究
    粉煤灰纖維架構彈性保溫隔熱材料的研究
    • 劉海順1,羅志明1,程亞軍1,龔小平2,王建東3
    2021年第2期
    摘要
    引用本文
    摘 ? 要:選用了粉煤灰纖維、超細粉煤灰纖維作為空間架構材料,采用陰離子表面活性劑發泡,以純熟料水泥凝膠硬化定型,輔以真空抽吸破泡,通過充分干燥及表面防水處理工藝制得了粉煤灰纖維架構彈性保溫隔熱材料。結果表明:當超細粉煤灰纖維摻量為5%~15%、粉煤灰纖維與純熟料水泥質量比為0.25、純熟料水泥摻量為5%~20%時,材料的導熱系數普遍在0.04~0.06 W/(m·K)之間,表觀密度集中在80~150 kg/m3,抗壓強度普遍低于0.20 MPa,所制得的保溫隔熱材料具有一定的彈性,永久變形量在0.050~0.090 mm之間。 Abstract: Fly ash fiber and ultra-fine fly ash fiber were selected as space structure materials. The anionic surfactant was used for foaming, the pure clinker cement gel was used to harden the shape, and the vacuum suction was used to break the foam, and the fly ash fiber structure elastic thermal insulation material was prepared through full drying and surface waterproof treatment. The results show that when the content of ultra-fine fly ash fiber is 5%~15%, the mass ratio of fly ash fiber to pure clinker cement is 0.25, and the content of pure clinker cement is 5%~20%, the thermal conductivity of the material is universal between 0.04~0.06 W/(m·K), the apparent density is concentrated in 80~150 kg/m3, and the compressive strength is generally lower than 0.20 MPa. The prepared thermal insulation material has certain elasticity and the permanent deformation is between 0.050~0.090 mm. ?
    劉海順,羅志明,程亞軍,等.粉煤灰纖維架構彈性保溫隔熱材料的研究[J].混凝土與水泥制品,2021(2):65-68. LIU H S,LUO Z M,CHENG Y J,et al.Study on Elastic Thermal Insulation Materials with Fly Ash Fiber Structure[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):65-68.
    新型預制低層裝配式剪力墻抗震性能試驗研究
    新型預制低層裝配式剪力墻抗震性能試驗研究
    • 趙陽1,王二成1,2,孔德昭3,孔德鵬3,李彥蒼1,2
    2021年第2期
    摘要
    引用本文
    摘 ? 要:提出了一種適用于低層建筑的裝配式剪力墻結構,并對3個足尺預制剪力墻試件進行了低周往復加載試驗。結果表明:在合理范圍內增加軸壓比, 墻體的承載力有明顯提高,兩個試件都是延性破壞,延性和耗能能力均有所增強;減小剪跨比會使墻體開裂荷載和原始剛度變大,但延性變差, 水泥砂漿層出現脆性破壞。 Abstract: A prefabricated shear wall structure for low rise buildings was put forward, low cyclic loading experiments were conducted on three full-scale precast shear wall specimens. The results show that with the increase of axial pressure ratio, the bearing capacity of the low-rise precast concrete shear wall specimen can be enhanced obviously. Two walls are ductile failure and the ductility and energy consumption capacity are slightly enhanced. Reduction of shear span ratio of wall can improve the cracking performance and initial stiffness, which can obviously reduce the ductility of the wall, and the shear slip failure of the cement mortar is produced.
    趙陽,王二成,孔德昭,等.新型預制低層裝配式剪力墻抗震性能試驗研究[J].混凝土與水泥制品,2021(2):69-73. ZHAO Y,WANG E C,KONG D Z,et al.Experimental Research on Seismic Performance of New Low-rise Precast Concrete Shear Walls[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):69-73.
    雙重耗能搖擺桁架-鋼框架結構體系的抗震性能分析
    雙重耗能搖擺桁架-鋼框架結構體系的抗震性能分析
    • 仝強1,葉曉康1,2,常軍1
    2021年第2期
    摘要
    引用本文
    摘 ? 要:為了提高結構的抗震性能,提出了一種雙重耗能搖擺桁架-鋼框架結構體系,即在搖擺桁架和鋼框架連接處安裝黏滯阻尼器,并在桁架底部設置自復位支撐(SCED)。建立了該系統的數值模型,并與搖擺桁架-鋼框架對比分析,以研究其在地震下的抗震性能。結果表明:黏滯阻尼器在地震作用下充分發揮耗能能力,自復位支撐在地震作用下的殘余應變基本為零,并能為結構提供足夠的自復位能力,結構的抗震性能得到了很大提高。 Abstract: To improve the seismic performance of the structure, a double energy consumption rocking truss-steel frame structure system is put forward, that is, dampers are installed at the connection between the rocking truss and the steel frame, and self-centering energy dissipates (SCED) are equipped at the bottom of the truss. The numerical model of the system is established and compared with the rocking truss-steel frame to study its seismic performance. The results show that the viscous dampers fully exert its energy dissipation capacity, and the residual strain of SCED is close to zero, which can provide sufficient self-centering capability for the structure and improve structural seismic performance. ?
    仝強,葉曉康,常軍.雙重耗能搖擺桁架-鋼框架結構體系的抗震性能分析[J].混凝土與水泥制品,2021(2):74-78. TONG Q,YE X K,CHANG J.Seismic Performance Analysis of Double Energy Dissipation Rocking Truss-steel Frame Structure System[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):74-78.
    早齡期普通混凝土直剪性能及損傷耗能分析
    早齡期普通混凝土直剪性能及損傷耗能分析
    • 劉杰,吳輝琴,陳宇良,晏方
    2021年第2期
    摘要
    引用本文
    摘 ? 要:為了研究早齡期普通混凝土直剪作用下的力學性能,完成了12個普通混凝土試件的直剪試驗,獲取了試件的破壞形態及直剪荷載-位移全過程曲線,分析了直剪作用下齡期對普通混凝土直剪強度、峰值變形、變形模量、損傷演變、能量耗散等力學特征參數的影響規律。結果表明:齡期越長,受剪荷載-變形曲線上升段越陡峭;當齡期≤3 d時,混凝土斷面剪切破壞形態為骨料與水泥基體之間界面的黏結破壞,當齡期≥7 d時,剪切破壞形態為骨料與水泥基體之間界面的黏結破壞與粗骨料本身的剪斷破壞;隨著齡期的延長,普通混凝土試件的峰值剪切變形減小,直剪強度、變形模量和能量耗散系數增大,混凝土損傷的出現變晚。 Abstract: In order to study the mechanical properties of ordinary concrete at early age under direct shear, a total of 12 test blocks were designed and completed for the direct shear. The failure patterns and direct shear load-displacement process curves of the specimens were obtained, and the influence rules of mechanical properties such as shear strength, peak deformation, deformation modulus, damage evolution and energy dissipation of ordinary concrete were analyzed at different ages under direct shear. The results show that the longer the age, the steeper the rising section of the shear load-deformation curve. When the age is less than or equal to 3 d, the shear failure of the concrete section is the bond failure between the aggregate and the cement matrix. When the age is greater than 7 d, the shear failure form is the bond failure of the interface between the aggregate and the cement matrix and the shear failure of the coarse aggregate. As the age increases, the peak shear deformation of the ordinary concrete specimen decreases, the shear strength, deformation modulus and energy dissipation coefficient increase, and the appearance of concrete damage becomes later.
    劉杰,吳輝琴,陳宇良,等.早齡期普通混凝土直剪性能及損傷耗能分析[J].混凝土與水泥制品,2021(2):79-83. LIU J,WU H Q,CHEN Y L,et al.Analysis of Direct Shear Performance and Damage Energy Consumption of Ordinary Concrete at Early Age[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):79-83.
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