Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE
2734-9489
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Các bài báo tiêu biểu
Structural damage detection using hybrid deep learning algorithm
Tập 14 Số 2 - Trang 53-64 - 2020
Timely monitoring the large-scale civil structure is a tedious task demanding expert experience and significant economic resources. Towards a smart monitoring system, this study proposes a hybrid deep learning algorithm aiming for structural damage detection tasks, which not only reduces required resources, including computational complexity, data storage but also has the capability to deal with d...... hiện toàn bộ
Optimization of steel moment frames with panel-zone design using an adaptive differential evolution
Tập 14 Số 2 - Trang 65-75 - 2020
Optimization of steel moment frames has been widely studied in the literature without considering shear deformation of panel-zones which is well-known to decrease the load-carrying capacity and increase the drift of structures. In this paper, a robust method for optimizing steel moment frames is developed in which the panel-zone design is considered by using doubler plates. The objective function ...... hiện toàn bộ
TỐI ƯU TRỌNG LƯỢNG DẦM FGM BẰNG THUẬT GIẢI TIẾN HÓA VI PHÂN CẢI TIẾN
Tập 13 Số 2 - Trang 48-63 - 2019
Bài báo giới thiệu một cách tiếp cận số cho bài toán tối ưu trọng lượng dầm FGM với ràng buộc về tần số dao động riêng. Phương pháp phần tử hữu hạn dựa trên lý thuyết biến dạng trượt bậc nhất được áp dụng để phân tích dao động riêng của dầm. Luật phân bố bốn tham số và năm tham số được sử dụng để mô tả phân bố thể tích của các vật liệu thành phần trong dầm theo phương chiều cao dầm. Mục tiêu là tố...... hiện toàn bộ
Phân tích dao động tự do của dầm FGM Timoshenko bằng phương pháp độ cứng động lực
Tập 10 Số 5 - Trang 19-28 - 2016
In this paper, free vibration of a functionally graded material (FGM) beam is investigated based on the Timoshenko beam theory and dynamic stiffness method. Material properties vary continuously throughout the thickness direction according to the volume fraction constituent defined by power law function. First, a consistent theory of vibration is established for FGM Timoshenko beam taking into acco...... hiện toàn bộ
Influence of fiber size on mechanical properties of strain-hardening fiber-reinforced concrete
Tập 14 Số 3 - Trang 84-95 - 2020
This research deals with the influences of macro, meso and micro steel-smooth fibers on tensile and compressive properties of strain-hardening fiber-reinforced concretes (SFCs). The different sizes, indicated by length/diameter ratio, of steel-smooth fiber added in plain matrix (Pl) were as follows: 30/0.3 for the macro (Ma), 19/0.2 for the meso (Me) and 13/0.2 for the micro fiber (Mi). All SFCs w...... hiện toàn bộ
A fast fuzzy finite element approach for laterally loaded pile in layered soils
Tập 12 Số 3 - Trang 1-9 - 2018
A fuzzy finite element approach for static analysis of laterally loaded pile in multi-layer soil with uncertain properties is presented. The finite element (FE) formulation is established using a beam-on-two-parameter foundation model. Based on the developed FE model, uncertainty propagation of the soil parameters to the pile response is evaluated by mean of the α-cut strategy combined with ...... hiện toàn bộ
Mix design of high-volume fly ash ultra high performance concrete
Tập 15 Số 4 - Trang 197-208 - 2021
The addition of supplementary cementitious materials (SCMs) to replace cement, especially with a high volume (> 50%), is an effective way to reduce the environmental impact due to the CO2 emissions generated in the production of ultra-high performance concrete (UHPC). Unfortunately, no official guidelines of UHPC using a high volume of SCMs have been published up to now. This paper proposes a n...... hiện toàn bộ
#high volume fly ash #ultra-high performance concrete #mix design #packing density #curing condition
Blast testing of ultra-high performance concrete fortifications using local materials
Tập 16 Số 4 - Trang 73-86 - 2022
This paper presents experimental results on blast testing of fortifications made from ultra high performance concrete (UHPC) and ordinary concrete (NC) by a non-contact explosion test with the TNT explosive. UHPC and NC samples used in the test were of the type of precast fortification of the real-scale and structure. TNT explosive was used in the test with a mass of 600 g per detonation. The expl...... hiện toàn bộ
#fortifications #ultra-high performance concrete #explosive load #damage area #strain
Simulation of several flying situations of paragliders
Tập 15 Số 1 - Trang 79-89 - 2021
Paragliding is an adventure and fascinating sport of flying paragliders. Paragliders can be launched by running from a slope or by a winch force from towing vehicles, using gravity forces as the motor for the motion of flying. This motion is governed by the gravity forces as well as time-varying aerodynamic ones which depend on the states of the motion of paraglider at each instant of time. There ...... hiện toàn bộ
Effect of spatial variability of creep rock on the stability of a deep double-lined drift
Tập 16 Số 3 - Trang 46-58 - 2022
This work aims at investigating the effect of aleatoric uncertainty of creep rock properties on the stability of an underground structure. This uncertainty relates to the spatial variability of the mechanical parameters representing the time-dependent behavior of geological rock formation due to the change in its mineralogy. The chosen methodology consists of representing the aleatoric uncertainty...... hiện toàn bộ
#spatial variability #aleatoric uncertainty #random field #EOLE #deep drift #viscoplastic behavior #Kriging-based reliability analysis