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- Mass concrete invert construction for Caoe River Sluice 曹娥江大閘大體積混凝土底板施工
- The application of FEM to the temperature and creep of the mass concrete structure is studied in this thesis. 本文就有限單元法在大體積混凝土結構溫度及徐變方面的研究與應用做了較系統的研究,主要完成了如下工作:
- The application of inter borehole acoustic wave method to probing deep cracks in mass concrete can effectively solve the above mentioned problems. 而應用聲波跨孔法進行大體積混凝土結構的深裂縫檢測可有效地解決上述問題。
- The paper presents a series of anti-cracking measures taken during the construction of mass concrete in hot weathers to prevent concrete cracking. 文章闡述了熱天大體積混凝土施工過程中,為防止混凝土裂縫的產生,採取了一系列相應的防裂措施,達到了預期的效果。
- The temperature specific property and change regularity of the mass concrete in laminal pouring are mirrored exactly by the monitoring result. 監測結果真實地反映了錨碇建設中薄層澆注大體積混凝土的溫度特性和變化規律。
- For the laminated pouring of mass concrete, the best time slot is close to the time that mass concrete reaches the tiptop temperature. 對分層澆築混凝土而言，其最佳分層澆築間隔時間一般在先澆築層混凝土達到最高溫升的時間附近。
- First, this paper uses finite element to analyze temperature field of mass concrete and derive corresponding calculative formula. 首先,應用有限元理論對大體積混凝土的溫度場進行了分析,推導出了相應的計算公式。
- This paper presents the construction methods of mass concrete for main pier abutment of the Fourth Bridge on Xiangjiang in Xiangtan. 本文對湘潭湘江四大橋主墩承台大體積混凝土施工中的施工方法進行闡述,並對施工過程中應該注意的質量控制方法進行分析和總結。
- Up to present, cooling methods, such as pipe cooling and precooling, are used to control the maximum temperatures in mass concrete to prevent cracking. 摘要提出一種新的混凝土結構溫控防裂方法，利用水管加熱、表面熱水或表面熱風，以加熱下部混凝土，減少上下部溫差，防止混凝土裂縫。
- Key words： reinforced concrete、 concrete、 high performance concrete、 cement concrete、 pozzolanic effect、 mass concrete. 關鍵詞：鋼筋混凝土、混凝土、性能混凝土、高強混凝土、泥混凝土、生骨料混凝土、體積混凝土。
- Great temperature difference and thermal stresses are caused by heat of hydration of cement to lead to creaks during mass concrete construction processing. 在大體積混凝土工程施工中,由水泥水化熱引起混凝土澆築體內外溫差和溫度應力的劇烈變化,產生裂縫。
- The authors consider that as a new concrete admixture the phosphorous slag is particularly suitable for use in internal part of hydraulic structure mass concrete. 認為，磷渣作為一種新的混凝土摻和料，尤其適用於水工大體積混凝土的內部。
- In this paper, by using Monte Carlo Method with irregular grid random walk in time-space domain the problem of mass concrete transient temperature field was solved. 摘要利用求偏微分方程的蒙特卡羅演算法，通過在時空域中不規則網格隨機遊動來求解大體積混凝土不穩定溫度場。
- Based on the insufficiency of existing expansive admixture in compensating shrinkage of the mass concrete,a double expansive resources admixture is introduced. 本文分析了現有膨脹劑在補償大體積混凝土收縮方面的不足,介紹了一種雙膨脹源膨脹劑。
- Prefabrication of permanent reinforced concrete casing as the formwork is one of optimal alternatives for expediting the progress of the construction of mass concrete at sea. 預製永久性鋼筋混凝土護筒模板的施工方案是加快海上大體積混凝土施工速度的優選方案之一。
- A cloud is a mass of vapor in the sky. 雲是天空中的水汽團。
- In this paper,by using Monte Carlo Method with irregular grid random walk in time-space domain the problem of mass concrete transient temperature field was solved. 利用求偏微分方程的蒙特卡羅演算法,通過在時空域中不規則網格隨機遊動來求解大體積混凝土不穩定溫度場。
- LI Dong.Viscoelastic numerical analysis of mass concrete structure subjected to deformational loads [J].Journal of Xi'an Highway University, 1998,18(4): 63-67. [3]李東.;大體積混凝土在變形荷載作用下的粘彈性有限元數值分析[J]
- Based on the theory of value engineering and control to adiabatic temperature change of mass concrete,it is proposed four-functions principle for design optimization of GHPC. 根據價值工程理論,提出了基於大體積混凝土絕熱溫升控制的綠色高性能混凝土(GHPC)優化設計的四功能準則。
- The problem of thermal stress and a need for temperature control in the mass concrete construction also occur in the roller compacted concrete dams(RCCD). 大體積混凝土的溫度應力問題與溫度控制要求在碾壓混凝土壩中同樣存在。
