A Study of Compressive Characteristics of Peats under Repeated Loading
反复加载下泥炭的压缩特性研究
基本信息
- 批准号:05660283
- 负责人:
- 金额:$ 1.15万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for General Scientific Research (C)
- 财政年份:1993
- 资助国家:日本
- 起止时间:1993 至 1994
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
A cyclic odometer consolidation test and a repeated drainage-saturation test were conducted in order to evaluate the effects of the functuation of water level in peaty ground, or of the repeated action of traffic load on the ground settlement. The tests results are summarized as follows ;1. The rate of settlement in long-range cyclic test was found to be relatively larger than that in statical consolidation test because of the effect of secondary compression. In the other hand, the rate of consolidation in short-range cyclic test with high consolidation pressure was smaller than that in statical consolidation test.2. In the cyclic loading of constant loading pressure with varying the unloading pressure, the maximum value of consolidation strain was found at the unloading pressure that is nearly same value as the consolidation yield stress.3. The consolidation strain increased at the beginning of cyclic loading of the short time preconsolidation. However, the value of strain decreased with increase of repeated cycles, and the plastic strain showed a constant value, which is independent from the preconsolidation time, after a certain cyclic period.4. The consolidation strain of long-range cyclic test showed relatively high value because the rate of secondary compression was higher than that of short-range cyclic test. However, there was no difference of the rate of consolidation between the long-range cyclic test and short-range cyclic test.5. The maximum strain of consolidation in the drainage-saturation test reached at the stress that is equivalent to twice as higher as the consolidation yield stress. While the consolidation strain increased with increase of repeated cycles in that stree level, the consolidation strain was keeping constant wiht increase of repeated cycles in other stress levels that is higher, or lower than the aforementioned stress level.
为了研究泥炭土地基中水位作用或交通荷载的反复作用对地基沉降的影响,进行了循环固结试验和反复排水饱和试验。试验结果总结如下:1.由于次压缩效应的影响,长期循环试验的沉降速率比静态固结试验的沉降速率相对较大。高固结压力下短程循环试验的固结速率小于静态固结试验.在恒定加荷压力和变化卸荷压力的循环加载中,固结应变的最大值出现在卸荷压力处,该值与固结屈服应力的值接近.短时间预固结的固结应变在循环加载初期增大。随着循环次数的增加,应变值逐渐减小,经过一定的循环周期后,塑性应变呈现出一个与预固结时间无关的恒定值.由于二次压缩速率比短周期试验高,长周期试验的固结应变值相对较高。而长周期和短周期试验的固结速率没有差异.在排水饱和试验中,最大固结应变出现在相当于固结屈服应力两倍的应力下。在该应力水平下,固结应变随循环次数的增加而增加,而在高于或低于该应力水平的其他应力水平下,固结应变随循环次数的增加而保持不变。
项目成果
期刊论文数量(11)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Kamaiya, M.: "Compressive Behavior of Peat under Cyclic Oedometer Consolidation Test" Proc.Anual Meeting of JSIDRE. (in Japanese). 50-52 (1994)
Kamaiya, M.:“循环 Oedometer 固结试验下泥炭的压缩行为”Proc.JSIDRE 年会。
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Kamaiya, M.: "Compressive Characteristics of Peat on Cyclic Drainage-Saturation Test" Proc.Symposium on Problems in Highly Organic Soil of JSSMFE. (in Japanese). 155-160 (1993)
Kamaiya, M.:“循环排水饱和试验中泥炭的压缩特性”Proc.JSSMFE 高有机土问题研讨会。
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神谷光彦: "短周期の繰返し載荷による泥炭の圧縮特性" 平成7年度農業土木学会大会講演会要旨集. (1995)
Mitsuhiko Kamiya:“短周期重复加载导致的泥炭压缩特性”1995 年日本农业和土木工程师学会会议摘要集(1995 年)。
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神谷光彦、川端伸一郎: "飽和-不飽和の繰返しによる泥炭の圧縮特性" 土質工学会、高有機質土地盤の諸問題に関するシンポジウム論文集. 155-160 (1993)
Mitsuhiko Kamiya、Shinichiro Kawabata:“由于反复饱和-不饱和而导致的泥炭压缩特性”土壤工程学会论文集,高有机土地基质各种问题研讨会 155-160 (1993)。
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神谷光彦: "飽和-不飽和の繰返しによる泥炭の圧縮特性" 高有機質土地盤の諸問題に関するシンポジウム論文集. 1993. (155-160)
Mitsuhiko Kamiya:“由于反复饱和-不饱和而导致的泥炭压缩特性”1993年高有机土各种问题研讨会论文集。(155-160)
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KAMIYA Mitsuhiko其他文献
Relation between Various Soil Index and Frost-susceptibility of Volcanic Soils in Hokkaido
北海道火山土各种土壤指数与霜冻敏感性的关系
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- 发表时间:
2002 - 期刊:
- 影响因子:0
- 作者:
KAWABATA Shinitiro;IKEDA Koichi;KAMIYA Mitsuhiko;TOKI Shosuke - 通讯作者:
TOKI Shosuke
Aggregation and Strength Characteristic by Uncompacted Curing of Lime Stabilized Soil
石灰稳定土免压实养护的团聚及强度特性
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- 发表时间:
2003 - 期刊:
- 影响因子:0
- 作者:
KYOSHITA Hitomi;KAMIYA Mitsuhiko;KAWABATA Shinitiro;TOKI Shosuke - 通讯作者:
TOKI Shosuke
Proposal for Method of Engineering Classification of Coarse Volcanic Ash Soils in Hokkaido
北海道粗火山灰土工程分类方法提案
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- 发表时间:
2001 - 期刊:
- 影响因子:0
- 作者:
IKEDA Koichi;KAMIYA Mitsuhiko;SATO Atsuko;SAITO Kazuo;KAWABATA Shinitiro - 通讯作者:
KAWABATA Shinitiro
On Frost-susceptibility Simple Judgement of the Hokkaido Volcanic Soil
北海道火山土抗冻性简单判断
- DOI:
- 发表时间:
2001 - 期刊:
- 影响因子:0
- 作者:
KAWABATA Shinitiro;KAMIYA Mitsuhiko;TOKI Shosuke - 通讯作者:
TOKI Shosuke
KAMIYA Mitsuhiko的其他文献
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{{ truncateString('KAMIYA Mitsuhiko', 18)}}的其他基金
The study on effective utilization of the construction waste sludge to road material by lime stabilization in cold region
寒冷地区石灰稳定化建筑垃圾污泥有效利用为路材的研究
- 批准号:
13660249 - 财政年份:2001
- 资助金额:
$ 1.15万 - 项目类别:
Grant-in-Aid for Scientific Research (C)