水利水电科技进展
水利水電科技進展
수이수전과기진전
Advances in Science and Technology of Water Resources
2015年
6期
73-77
,共5页
氧化镁混凝土%拱坝%正倒垂观测%宏观变形%微膨胀
氧化鎂混凝土%拱壩%正倒垂觀測%宏觀變形%微膨脹
양화미혼응토%공패%정도수관측%굉관변형%미팽창
MgO concrete%arch dam%monitoring with plumb line method and inverted plumb line method%macroscopic deformation%micro-expansion
在整理三江拱坝等氧化镁混凝土拱坝工程长达十年之原型监测资料的基础上，结合拱坝在库水、空气、地基等边界条件下的实测温度，讨论拱坝的温度场及温度作用。同时，三江拱坝的正倒垂观测资料表明，全坝混凝土外掺氧化镁后使拱坝产生了类似于温升作用的变形效果，在宏观变形上进一步验证氧化镁混凝土的膨胀效应，并从拱坝宏观变形的角度讨论了混凝土外掺氧化镁后的工程意义。
在整理三江拱壩等氧化鎂混凝土拱壩工程長達十年之原型鑑測資料的基礎上，結閤拱壩在庫水、空氣、地基等邊界條件下的實測溫度，討論拱壩的溫度場及溫度作用。同時，三江拱壩的正倒垂觀測資料錶明，全壩混凝土外摻氧化鎂後使拱壩產生瞭類似于溫升作用的變形效果，在宏觀變形上進一步驗證氧化鎂混凝土的膨脹效應，併從拱壩宏觀變形的角度討論瞭混凝土外摻氧化鎂後的工程意義。
재정리삼강공패등양화미혼응토공패공정장체십년지원형감측자료적기출상，결합공패재고수、공기、지기등변계조건하적실측온도，토론공패적온도장급온도작용。동시，삼강공패적정도수관측자료표명，전패혼응토외참양화미후사공패산생료유사우온승작용적변형효과，재굉관변형상진일보험증양화미혼응토적팽창효응，병종공패굉관변형적각도토론료혼응토외참양화미후적공정의의。
Based on 10 years of prototype monitoring data of existing MgO concrete arch dams in China, such as the Sanjiang Arch Dam, and in combination with measured temperatures under the boundary conditions in regard to reservoir water, air, and foundation, the temperature field and temperature load of arch dams are discussed. Observed data from the Sanjiang Arch Dam using the plumb line and inverted plumb line method indicate that the deformation of the arch dam induced by adding MgO to concrete for dam construction is similar to that caused by temperature rise, verifying the expansion effect of MgO concrete. From the viewpoint of the macroscopic deformation of the arch dam, the engineering significance of MgO concrete is further discussed.
