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May 25, 2023Open Access
Foundation pit collapse is a continuous failure process. One of the main characteristics of foundation pit collapse caused by internal support failure is that it will lead to the destruction of the enclosure structure. Based on the actual foundation pit engineering, this paper uses the finite element software Midas-GTS NX to establish a three-dimensional foundation pit model. Based on the principle of component removal method and nonlinear dynamic analysis method, the influence of the inner supp...
May 10, 2023Open Access
The bidirectional compression bending members exhibit interactions among their strength, stiffness, and plastic deformation capacity in their two principal axis directions. Unfortunately, there is limited research on the performance of H-shaped cross-section steel members under bidirectional compression bending controlled by local instability, making it imperative to develop further research in this area. To address this issue, a finite element model was established to investigate the nonlinear ...
Jan 31, 2023Open Access
This study highlights the of wood chip on the physical and mechanical characteristics of concrete. The objective is to promote iroko wood chip in the construction sector. The aim is to incorporate chip into concrete and to study its influence on the physico-mechanical properties of concrete. To conduct this study, the materials used were first characterized. Secondly the concrete was formulated and the concrete specimens were poured. Finally, the physical and mechanical characterizations of conc...
Nov 18, 2022Open Access
Urban subway tunnel engineering in reducing travel inconvenience and effective utilization of urban underground space has played an important role. Due to the complexity and diversity of metro tunnel construction, the construction safety accidents occur frequently, so the choice of the reasonable construction method to improve its security and the economy is particularly important. In this paper, the construction steps, construction characteristics and applicable conditions of the common subway ...
Oct 31, 2022Open Access
The Udwadia-Kalaba formulation is proposed to model the longitudinal dynamics of a road vehicle. To render complex situations such as spinning on a slippery road, an original approach is implemented by the relaxation of constraints in the Udwadia-Kalaba formulation for the rolling of a wheel. In a combined approach of both slip and stiction in the contact section, the constraints equations of pure rolling are associated with stiction. Such constraints are lifted as slip occurs to allow the dynam...
Oct 18, 2022Open Access
Living with a place to call home is one of life’s most important aspects, after food. Housing is an essential component of the solution to Nigeria’s burgeoning metropolitan population, which poses severe problems for the government as well as the metropolitan population. To address Nigeria’s rising population’s housing needs, the private and government sector are exploring local alternatives to the regular building materials due to their soaring price. In this article, the incentives of stabiliz...
Jun 30, 2022Open Access
The use of modern technologies in Civil Engineering is increasing in recent years. Due to the different aesthetic needs of people, the building of different shapes and sizes is in practice. Such building structure is more susceptible to seismic force. Numerous methods have been followed to reduce the severe effects. The shape of a building is one such method which changes the structural behavior. The objective of this research is to compare seismic properties of the seismic region of Nepal using...
Jun 15, 2022Open Access
A solid foundation is always essential when it comes to the construction of roads and pavements. The foundation must be constructed of a long-lasting material that can sustain years of traffic while remaining dependable. The shortage of good-quality durable materials for pavement structure (base, subbase, and subgrade) on construction sites is a common issue in highway and pavement construction. As a result, the individual and combined influences of Portland cement and sand on the stabilization ...
Apr 28, 2022Open Access
Increased groundwater abstraction may lead to decline in water levels. This study investigated the effects of oil production on groundwater levels in Lokichar basin in Turkana County, Kenya. The specific objectives were to: 1) establish changes in groundwater demand and 2) determine borehole water levels in the study area. Water levels for two boreholes within the study area were recorded between 12th August and 11th September 2020. The Kenya Ministry of Water and Irrigation Design Manual guidel...
Apr 08, 2022Open Access
In this paper, the mix proportion design of Steel Fiber Ceramsite Concrete is carried out by combining the total calculation method with the absolute volume method. The mechanical properties of SFRLAC with steel fiber vo- lume fraction (Vf) 0% - 2% and matrix strength of LC30, LC40 and LC50 were tested. The relationship between the volume fraction of steel fiber and the increase of compressive strength, flexural strength and splitting tensile strength was analyzed. The test results show that, wi...
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