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Evi Aprianti
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International Association of Lowland Technology In Collaboration with Hasanuddin University and Saga University Address Faculty of Engineering, Center of Technology Building, 1st Floor Jalan Poros Malino km. 6, Bontomarannu, Gowa Indonesia Postal Code: 91711
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Lowland Technology International
Published by International Association of Lowland Technology
ISSN : 13449656     EISSN : 21878870     DOI : https://doi.org/10.0001/ialt_lti
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
The Lowland Technology International Journal presents activity and research developments in Geotechnical Engineering, Water Resources Engineering, Structural Engineering, Transportation Engineering, Urban Planning, Coastal Engineering, Disaster Prevention and Mitigation Engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 5 Documents
 1 
Search results for , issue "Vol 5 No 1, June (2003)" : 5 Documents clear
GEOTECHNICAL HAZARDS IN BANGKOK - PRESENT AND FUTURE S. Shibuya; S. B. Tamrakar; W. Manakul
Lowland Technology International Vol 5 No 1, June (2003)
Publisher : International Association of Lowland Technology

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Abstract

Geotechnical hazards in Bangkok, the capital of Thailand, are cited with reference to floods, land subsidence and earthquakes, bearing the characteristic subsoil conditions in mind. First, geotechnical engineering works concerning the implementation of flood protection schemes are briefly outlined. Second, the cause of land subsidence, i.e., the drawdown of pore pressures in clay layer induced by water pumping in the aquifer, together with the current situations are described by showing the results of geotechnical site investigation performed recently. Finally, a risk of seismic hazard in Bangkok is roused by referring to a statement that “the surficial geologic setting at Bangkok is similar to the setting of Mexico City, and hence Bangkok, by analogy, appears to be susceptible to the same type of soil amplification of ground motions (Warnitchai et al. 2000)”.
THE INFLUENCE OF INITIAL STATIC SHEAR STRESS ON POST-CYCLIC DEGRADATION OF NON-PLASTIC SILT B.- W. Song
Lowland Technology International Vol 5 No 1, June (2003)
Publisher : International Association of Lowland Technology

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Abstract

Using a sequential procedure of cyclic and post-cyclic direct simple shear (DSS) tests, the strength and stiffness degradation characteristics of non-plastic silt were studied during and immediately after cyclic loading. The postcyclic degradations of strength and stiffness were considered with special reference to the effects of initial static shear stress (ISSS). The findings obtained from sequential DSS testing on non-plastic silt are: (1) strength and stiffness degradation characteristics of non-plastic silt during post-cyclic loading depend on the increase of the normalized pore pressures generated during cyclic loading, which is more marked with increasing ISSS; (2) degradation of stiffness is particularly to ISSS; (3) post-cyclic degradation relations of strength and stiffness for non-plastic silt formulated against cyclic-induced excess pore pressure should include the influence of ISSS. The methods formulated for predicting post-cyclic strength and stiffness take the effect of ISSS into consideration.
PREDICTION MODEL OF INUNDATION IN PUMPED-FIELD LOWLANDS AND SCENARIOS FOR IMPROVING ITS PERFOMANCE N. Cao Don; H. Araki; H. Yamanishi; K. Koga
Lowland Technology International Vol 5 No 1, June (2003)
Publisher : International Association of Lowland Technology

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Abstract

During rainy season, frequent flooding by strom water is one of the most serious problems in lowland areas, causing heavy effect on transportation, agriculture, industry, and economic activities. As a result, the required drainage water levels in this area are generally lower than the water levels of boundary rivers. Under such circumstances, pumping system should be designed from a viewpoint of integrated control floods. The Nam Ha lowland, in Vietnam, bounded by four surrounding rivers, is selected as a case study. The operation scheme in this area is a key factor for drainage and flood protection. This developed mathematical model can be used as a tool to evaluate the present drainage system as well as flooding processes in the field as well as inundation areas and water levels along drainage channels. It is found that the proposed model can be applied to evaluate integrated flood control system for pumped-field lowland. Such an operating system provides an effective tool by means of which the drainage system can be operated appropriately taking into account of tidal effects, rainfall intensity, and reaching time of the rainwater.
INSTABILITY OF COASTAL LOWLANDS DUE TO SEISMIC ACTIVITIES H. B. Poorooshasb
Lowland Technology International Vol 5 No 1, June (2003)
Publisher : International Association of Lowland Technology

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Abstract

In certain regions of the world the coastal lowlands consist of a two to three meters of impervious material supported by a layer of sand and underlain by a thick layer of stiff marine clay. One such region is in the vicinity of the City of Bushire (Bushehr) located in the northern shores of the Persian Gulf. Here the top layer is a two to three meter thick coquina layer, resting on a very loose sand deposit of almost constant thickness (about 50-60 cm) having a gentle slope of about 5-10 degrees towards the sea. A sever earthquake in this region several centuries ago completely destroyed the City of Siraf which, at the time, was the most important port of the Persian Gulf on the Silk Route. The present paper presents an analysis of the situation using the CANAsand Constitutive Model and the ID technique proposed by the Author and his Colleagues at Institute of Lowland Technology, Saga University, Poorooshasb et al (1996).
DISASTERS AND ENVIRONMENTAL MANAGEMENT IN THE DONGTING LAKE LOWLANDS R.– L. Yin; D.- X. Shen; Z.- G. Che
Lowland Technology International Vol 5 No 1, June (2003)
Publisher : International Association of Lowland Technology

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Abstract

Dongting Lake is one of the most important freshwater lakes in China. There is a dense population and richresources in the lake region that is also an important natural ecological system. The Dongting Lake lowlands have always been a serious flood disaster region, and human activities have impacted negatively on the ecological environment. In response, the Chinese government has adopted a series of structural and non-structural measures, resulting in mitigation of flooding disasters and improving the environmental protection in the lake region.

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