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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

基本信息

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

项目摘要

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.

为了阐明颗粒状高炉渣（GBFS）潜在水力特性的影响，通过对GBFS试样和Toyoura砂进行循环和静态三轴试验，观察其液化强度特征，得出硬化程度与循环强度之间的关系。在此基础上，利用砂箱进行了一系列静力和地震条件下的模型墙试验，测量了组合土压力、墙体摩擦力和墙体表面土压力分布，并将试验结果与托优拉砂进行了比较。主要结论总结如下：1)未硬化GBFS的循环应力比大于toyoua标准砂。GBFS循环抗剪强度大的原因是由于GBFS的联锁作用。2)在高温碱水中养护，GBFS的静态抗压强度和液化强度随着养护时间的延长以一种潜在的水力特性增加。3)循环次数N_c=20时的循环应力比R_<20>与黏聚力C_d之间存在着独特的关系，可以通过静态三轴试验结果来估计GBFS的液化强度。4)存在一个无侧限抗压强度，在此强度下GBFS可能不会液化。5)相对密度在25 ~ 55%范围内，GBFS的合成土压力比Toyoura砂小。6)活动侧合成土压力随位移循环次数的增加而减小。在被动侧，合成土压力随位移周期的增加而增加。7)对于GBFS和Toyoura砂，静力和地震条件下的合成土压力和壁面摩擦力随相对密度的增大而增大。

项目成果

期刊论文数量（12）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

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

DOI：
发表时间：
2005
期刊：
第40回地盤工学会研究発表会論文集
影响因子：
0
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

DOI：
发表时间：
2005
期刊：
土木学会第60回年次学術講演会
影响因子：
0
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

DOI：
发表时间：
2006
期刊：
The International Symposium on Management System for Disaster Prevention. C3
影响因子：
0
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