Design for earthquake-resistant earth structures using the latent hydraulic property of granulated blast furnace slag

利用粒化高炉矿渣潜在水硬特性的抗震土结构设计

• 批准号: 16560714
• 负责人: MATSUDA Hiroshi
• 金额: $ 2.37万
• 依托单位: Yamaguchi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16560714/
• 关键词: Environmental technology; Earthquake; Ground engineering; Material in civil engineering; Waste recycling; 高炉水砕スラグ; 液状化; 動的強度; 土圧; 固結; 相対密度; 豊浦標準砂; 初期拘束圧

In order to clarify the influence of a latent hydraulic property of granulated blast furnace slag (GBFS), the liquefaction strength characteristics were observed by the cyclic and the static tri-axial tests for GBFS specimen and Toyoura sand, and the relations between the level of hardening and the cyclic strength were obtained. Furthermore, by using the sand box, a series of the model wall tests for the static and the seismic conditions were carried out on the GBFS, in which the resultant earth pressure, the wall friction and the earth pressure distribution at the wall surface were measured, and the test results were compared with those of Toyoura sand. The main conclusions are summarized as follows.I)The cyclic stress ratio of non-hardening GBFS is larger than those of Toyoura standard sand. The reason for the large cyclic shear strength of GBFS is due to the interlocking effects of GBFS.2)By curing in the high temperature alkali water, the static compression strength and the liquefaction strength of GBFS increases with the curing period by a latent hydraulic property.3)An unique relation is found between the cyclic stress ratio R_<20> at the number of cycles N_c=20 and cohesion C_d, and it is possible to estimate the liquefaction strength of GBFS by using static tri-axial test results.4)There is an unconfined compressive strength under which GBFS might not be liquefied.5)A smaller resultant earth pressure was obtained for GBFS compared with the Toyoura sand for the relative density in the range from 25-55%.6)The resultant earth pressure in the active side decreases with the number of displacement cycles for both GBFS and Toyoura sand. In the passive side, the resultant earth pressure increases with the displacement cycles.7)For GBFS and Toyoura sand, the resultant earth pressure and the wall friction in the static and seismic condition increase with the relative density.

为明确粒化高炉矿渣（GBFS）潜在水硬性的影响，通过GBFS试件和丰浦砂的循环和静态三轴试验，观察了其液化强度特性，并分析了其液化强度水平之间的关系。获得了硬化和循环强度。此外，利用砂箱在GBFS上进行了一系列静力和地震条件下的模型墙试验，测量了合成土压力、墙体摩擦力和墙体表面土压力分布。 ，并将测试结果与丰浦砂进行了比较。主要结论如下：一)非硬化GBFS的循环应力比大于Toyoura标准砂。 GBFS循环剪切强度大的原因是由于GBFS的连锁效应。2）通过在高温碱水中养护，GBFS的静压强度和液化强度通过潜在的水硬性能随着养护时间的增加而增加.3)在循环次数N_c=20时的循环应力比R_<20>与内聚力C_d之间发现了独特的关系，可以利用静态估计GBFS的液化强度三轴试验结果。4）GBFS存在无侧限抗压强度，在该强度下GBFS可能不会液化。5）相对密度在25-55%范围内时，与Toyoura砂相比，GBFS获得的合成土压力更小.6) 对于 GBFS 和 Toyoura 砂，主动侧的合成土压力随着位移循环次数的增加而减小。在被动侧，合成土压力随着位移周期的增加而增加。7)对于GBFS和Toyoura砂，静态和地震条件下的合成土压力和墙体摩擦力随着相对密度的增加而增加。

项目成果

未硬化高炉水砕スラグの液状化特性

未硬化粒化高炉矿渣的液化特性

• 发表时间: 2005
• 期刊: 第40回地盤工学会研究発表会論文集
• 作者: M.ICHIDATE;M.TAKAI;M.NAGAO;H.KOUKETU;Y.HASEGAWA;T.KUZUYA;T.WAKAMATSU;S.Nagata ほか;Yuko Hirohata;橋口大輔
• 通讯作者: 橋口大輔

未硬化高炉水砕スラグの静的および地震時土圧

未硬化粒化高炉矿渣的静力和地震土压力

• 发表时间: 2005
• 期刊: 土木学会第60回年次学術講演会
• 作者: M.ICHIDATE;M.TAKAI;M.NAGAO;H.KOUKETU;Y.HASEGAWA;T.KUZUYA;T.WAKAMATSU;一伊達 稔;篠崎晴彦;白元珍
• 通讯作者: 白元珍

Application of Granulated Blast Furnace Slag to Reduce the Seismic Earth Pressure

粒化高炉矿渣降低地震土压力的应用

• 发表时间: 2006
• 期刊: The International Symposium on Management System for Disaster Prevention. C3
• 作者: M.ICHIDATE;M.TAKAI;M.NAGAO;H.KOUKETU;Y.HASEGAWA;S.KATO;H.Matsuda
• 通讯作者: H.Matsuda

高炉水砕スラグの硬化が液状化特性に及ぼす影響

水化高炉矿渣硬化对液化特性的影响

• 发表时间: 2005
• 期刊: 第40回地盤工学研究発表会
• 作者: M.ICHIDATE;M.TAKAI;M.NAGAO;H.KOUKETU;Y.HASEGAWA;T.KUZUYA;T.WAKAMATSU;一伊達 稔;篠崎晴彦
• 通讯作者: 篠崎晴彦