DSpace collection: 會議論文

基於位移極值反應之橋梁等值靜力風載重

Wed, 25 Mar 2026 04:07:49 GMT

title: 基於位移極值反應之橋梁等值靜力風載重 abstract: 對於高層建築或是橋梁之類柔度較高的建築而言，風致抖振是其重要的結構振動之一，而等值靜力風載重目的在將結構的風致動態反應轉化為等效的靜載重，為風洞試驗與結構工程師之間重要的溝通橋梁。傳統上常見的等值靜力風載重有陣風反應因子法(GLF)、慣性力分佈法(IWL)或是LRC法等。結構的風致反應依反應特性不同可區分為背景反應以及共振反應兩部分，在其靜力風載重計算上可由LRC法獲得整體背景反應對應之等值靜力風載重；對於共振反應對應的等值靜力風載重則可藉由考慮數個振態慣性力獲得，最後再經由載重組合得到結構物的等值靜力風載重，而該方法本質上是不考慮振態間的相關性，因此對於普通高層建物、電塔等結構耦合不明顯的結構適用性佳。然而對於線型特殊、大跨度等結構，由於其結構耦合特性明顯，在計算其静力風載重時，則必須要考慮振態間的相關性。本研究旨在為耦合結構提供一合適的風載重計算方法，本研究內容包含兩大部分，第一部分介紹本研究中所提出之靜力風載重計算方式，該方法考慮振態間的相關性，為一以單一特定位置的位移極值反應為目標的計算方式，該方法是一基於散漫理論之率域數值方法，因此亦可藉由顫振導數考慮橋梁之氣彈影響。而第二部分則為驗證的部分，本文選定一座中短跨徑之人行拱橋作為研究標的，並使用結構系統力學能來作為參予振態選擇上的參考。數值案例中分別以主樑中點拖曳向、邊跨垂直向以及中點扭轉向為目標計算其等值靜力風載重，結果顯示所，本文所提出等值靜力風載重所得到之靜力位移與結構之動態位移反應極值相當吻合，該方法應可對工程實務上有所幫助。

現今主應力對裂面再滑動之影響

Wed, 25 Mar 2026 04:07:45 GMT

title: 現今主應力對裂面再滑動之影響

Damage measures of low-rise building foundations on layered sands due to earthquake impacts

Wed, 25 Mar 2026 04:07:41 GMT

title: Damage measures of low-rise building foundations on layered sands due to earthquake impacts

The influences of input ground motions on ground displacements

Wed, 25 Mar 2026 04:07:36 GMT

title: The influences of input ground motions on ground displacements

A study on total factor of safety for liquefaction potential assessment

Thu, 19 Mar 2026 04:07:43 GMT

title: A study on total factor of safety for liquefaction potential assessment

Damage measures of low-rise building foundations on layered sands due to seismic impacts

Thu, 19 Mar 2026 04:07:35 GMT

title: Damage measures of low-rise building foundations on layered sands due to seismic impacts

斜張橋模型修正與氣動力分析

Thu, 26 Feb 2026 04:08:59 GMT

title: 斜張橋模型修正與氣動力分析

山區懸索橋梁之風致反應評估

Thu, 26 Feb 2026 04:08:54 GMT

title: 山區懸索橋梁之風致反應評估

砂土地盤樁筏基礎之土壤反力係數和基樁勁度研究

Thu, 20 Mar 2025 04:09:59 GMT

title: 砂土地盤樁筏基礎之土壤反力係數和基樁勁度研究

以新聞採編工作坊輔助營建管理教學之研究

Thu, 20 Mar 2025 04:09:55 GMT

title: 以新聞採編工作坊輔助營建管理教學之研究 abstract: 本研究主要探討以新聞採編工作坊輔助營建管理教學之研究成果。研究動機在於營建管理課程較抽象，需要大量閱讀理解，但近年學生閱讀能力普遍下降，因此教學存在困境。為此，研究引入課後學習的新聞採編訓練課程模組，透過報導寫作訓練提升學生資料收集及寫作能力。研究設計包含新聞採編訓練課程模組、營建管理學習成效評量量表等。教學過程分三階段進行：首先學生自主學習新聞採編知識，接著舉辦模擬編輯會議確認報導觀點，最後學生撰寫土木新聞專題並發表。研究結果顯示新聞採編訓練課程可行，對營建管理學習成效有正面幫助。問卷資料顯示學生在工程專案規劃與敘事能力等方面有所進步。整體而言，新聞採編訓練可提升學生資料收集與寫作能力，有助營建管理學習，但培養閱讀敘事力仍需長期訓練。本研究為營建管理課程提供創新教學模式，而教學過程、學生的回饋及教學成效也給予教師對於課後自主學習的教學方法和策略更深刻的體會與反思。

液化地盤之樁筏基礎性能分析

Tue, 08 Oct 2024 04:07:35 GMT

title: 液化地盤之樁筏基礎性能分析 abstract: 本文旨在說明地工構造性能設計和位移性能分析方法，並以液化地盤之低矮建物基礎為例，藉有限元素分析說明基礎和地盤在地震作用下之位移性能。研究顯示低矮建物筏基可抑制其下方淺層地盤土壤液化行為，但將增加兩側地盤變形和位移，樁筏基對基礎下方土壤液化抑制效果更為明顯，但地盤位移變化複雜，須仔細評估；對筏基而言，增加版寬有利於耐震性能，但荷重和埋深等影響效應則未定；樁筏基的樁長和樁數增加均有利於基礎性能。除水平地震力外，垂直向地震力影響相當明顯，特別是近斷層場址基礎之分析必須加以考量。

節瘤型土釘抗拉拔力之實驗觀察

Fri, 20 Sep 2024 04:10:07 GMT

title: 節瘤型土釘抗拉拔力之實驗觀察

地震下地層液化對低矮建物直接基礎影響評估

Fri, 20 Sep 2024 04:09:59 GMT

title: 地震下地層液化對低矮建物直接基礎影響評估

埋深對垂直載重樁筏基礎之基樁位移和反力影響

Fri, 20 Sep 2024 04:09:55 GMT

title: 埋深對垂直載重樁筏基礎之基樁位移和反力影響

砂土地盤樁筏基礎之土壤反力係數和基樁勁度研究

Fri, 20 Sep 2024 04:09:52 GMT

title: 砂土地盤樁筏基礎之土壤反力係數和基樁勁度研究

THE EFFECTS OF LOW RISE BUILDING MAT ON LIQUEFIABLE SITE

Fri, 20 Sep 2024 04:09:48 GMT

title: THE EFFECTS OF LOW RISE BUILDING MAT ON LIQUEFIABLE SITE abstract: The effects of low-rise building mat on liquefiable site were investigated in this study. One-dimensional ground response analyses of a layered sand model profile were conducted using Midas. The UBCSand soil model was used. The excess pore water pressure and the stress/strain time histories as well as the ground deformation of the numerical model were examined. With the comparison of the free-field solutions, if the liquefaction occurred, the mat can cause the subsoils to settle more and push the side soils to move laterally, which will yield sway motions of the mat. The deeper embedment of the mat sometimes would help to minimize such phenomenon.

Verification of piezo drive cone data against standard penetration and cone penetration tests: a case study in Taiwan

Fri, 13 Sep 2024 04:05:50 GMT

title: Verification of piezo drive cone data against standard penetration and cone penetration tests: a case study in Taiwan

Influence of bidirectional shaking on pore water pressure generation for liquefaction triggering evaluation

Fri, 13 Sep 2024 04:05:46 GMT

title: Influence of bidirectional shaking on pore water pressure generation for liquefaction triggering evaluation abstract: Over the past years, prior research has shown that bidirectional horizontal shaking can increase seismic settlements in dry sand, the buildup of excess pore water pressures in saturated granular soils, and the liquefied depth. However, the state of practice for either simplified liquefaction triggering procedures or numerical/experimental seismic simulation is typically for one-dimensional (1D) conditions, without considering the impact of bidirectional horizontal shaking on soil deposits with stratigraphic variabilities. In this paper, three-dimensional (3D), fully-coupled, nonlinear finite element analyses are used to evaluate how bidirectional horizontal shaking affects the seismic response of layered liquefiable soil deposits. The two horizontal components of each selected motion were rotated to find the maximum rotated (RotD100) peak ground acceleration (PGA). The two horizontal components and the RotD100 component were subjected to the base of each 3D soil column model, to represent the site response analysis under bidirectional (BD) and 1D shaking, respectively. The numerical results showed that the BD shaking and pore water pressure migration increased the excess pore water pressure (EPWP) buildup in soils, particularly for medium-dense and dense soils. This led to an increase in liquefied depth when the soil deposits were under moderate-intensity shaking, as compared to the model under 1D shaking or evaluated by the simplified liquefaction triggering procedure. For the case considered, the BD shaking amplified the maximum excess pore water pressure ratio by about 1.3 times on average (with a standard deviation of 0.3) compared to that under 1D shaking, particularly for PGA ranging from 0.002~0.3g. However, the impacts of BD shaking on the EPWP generation became minor when PGA was greater than 0.3g. These results indicated that the impact of bidirectional shaking on the seismic response of porous media must be considered with extreme care when assessing the risk of liquefaction.

Assessments of dimensionless pile stiffness for embedded piled raft foundations in soft clays under vertical loads

Fri, 13 Sep 2024 04:05:42 GMT

title: Assessments of dimensionless pile stiffness for embedded piled raft foundations in soft clays under vertical loads abstract: Three-dimensional finite element analysis has been widely used in foundation design. For the efficiency of computations, simplified analysis treating the soils by series of springs were suggested in many design practice. For piled raft foundation, the coefficients of subgrade reactions and the pile stiffness are thus important to the design analysis. This paper intends to discuss the values of coefficients of pile reactions and/or pile stiffness for the embedded piled raft foundations in soft clays subjected to vertical uniform loads. Dimensionless pile displacements, pile reactions, and coefficient of pile reactions were suggested. Their correlations with the ratio of foundation embedment depth to raft size, the slenderness ratio of pile, and the ratio of pile-to-pile spacing distance to pile diameter were examined. Finally the optimized correlation diagrams were reported while a simple modelling was able to verify the suggestion.

Dimensionless modulus of subgrade reaction for embedded mat foundation in soft clay under vertical load

Fri, 13 Sep 2024 04:05:39 GMT

title: Dimensionless modulus of subgrade reaction for embedded mat foundation in soft clay under vertical load abstract: The dimensionless modulus of the subgrade reaction for embedded mat foundation in soft clays under the vertical load is suggested in this paper using 3D FEM analysis and the Mohr-Coulomb soil model. Besides the soil stiffness, the embedded depth and width of the raft, the depth of diaphragm wall, and the total structural loads were considered as influence factors. For applications to routine designs, foundation displacement, soil reaction, and modulus of subgrade reaction were examined by their non-dimensional measures. The optimized correlations with the foundation geometries are suggested based on various soil stiffness and structural load.

Developing a two-dimensional nonlinear vertical spring model for mat foundation in clays using hyperbolic function

Fri, 13 Sep 2024 04:05:35 GMT

title: Developing a two-dimensional nonlinear vertical spring model for mat foundation in clays using hyperbolic function abstract: A two-dimensional nonlinear soil spring model for mat foundation in clays is introduced in this paper. Hyperbolic function was used to model the nonlinear load-displacement relationships of the mat. The solutions from three-dimensional finite element analysis were analyzed to find the model parameters of the soil springs underneath the slab. Using the normalized functions of the model parameters across the mat, the two-dimensional modelling of the soil springs was suggested. The solutions from the proposed model with the finite difference analysis were found agreeable to the three-dimensional finite element analysis.

A self-regularized approach for thermal stress analysis of free-free trusses under nonuniform temperature change

Mon, 15 Jan 2024 04:05:52 GMT

title: A self-regularized approach for thermal stress analysis of free-free trusses under nonuniform temperature change

Application of meshfree boundary integral equation method to torsion problems of cylindrical bar with edge cracks

Mon, 15 Jan 2024 04:05:49 GMT

title: Application of meshfree boundary integral equation method to torsion problems of cylindrical bar with edge cracks

Meshfree boundary integral equation method for the steady state heat conduction in exchanger tubes: degenerate scale and treatments

Mon, 15 Jan 2024 04:05:47 GMT

title: Meshfree boundary integral equation method for the steady state heat conduction in exchanger tubes: degenerate scale and treatments

山峰地形受水平剪力波作用下的聚焦現象其數值探討

Mon, 15 Jan 2024 04:05:44 GMT

title: 山峰地形受水平剪力波作用下的聚焦現象其數值探討

無網格邊界積分方程法於含裂縫扭轉桿的扭轉剛度分析

Mon, 15 Jan 2024 04:05:41 GMT

title: 無網格邊界積分方程法於含裂縫扭轉桿的扭轉剛度分析

Analysis of seepage problems with sheet plies by using the meshfree boundary integral equation method

Mon, 15 Jan 2024 04:05:38 GMT

title: Analysis of seepage problems with sheet plies by using the meshfree boundary integral equation method

Conduction shape factor in exchanger tubes with a slit by using the meshfree boundary integral equation method

Mon, 15 Jan 2024 04:05:35 GMT

title: Conduction shape factor in exchanger tubes with a slit by using the meshfree boundary integral equation method

Study on the interaction between a screw dislocation and circular rigid inclusions by using the angular basis function in conjunction with bipolar coordinates

Mon, 15 Jan 2024 04:05:32 GMT

title: Study on the interaction between a screw dislocation and circular rigid inclusions by using the angular basis function in conjunction with bipolar coordinates

Application of meshfree boundary integral equation method to SH-wave scattering problems containing a cylindrical canyon of arbitrary shape

Fri, 12 Jan 2024 04:05:41 GMT

title: Application of meshfree boundary integral equation method to SH-wave scattering problems containing a cylindrical canyon of arbitrary shape

Support motion of a finite bar with a viscously damped boundary

Fri, 12 Jan 2024 04:05:39 GMT

title: Support motion of a finite bar with a viscously damped boundary

無網格邊界積分方程法求解彈性桿的扭轉問題

Fri, 12 Jan 2024 04:05:36 GMT

title: 無網格邊界積分方程法求解彈性桿的扭轉問題

無網格邊界積分方程法分析熱交換管中的穩態熱傳問題與其退化尺度的探討

Fri, 12 Jan 2024 04:05:33 GMT

title: 無網格邊界積分方程法分析熱交換管中的穩態熱傳問題與其退化尺度的探討

Revisit of annular Green's function by using the meshfree boundary integral equation method

Fri, 12 Jan 2024 04:05:30 GMT

title: Revisit of annular Green's function by using the meshfree boundary integral equation method

Two dimensional steady state heat conduction in exchanger tubes by using the meshfree boundary integral equation method

Fri, 12 Jan 2024 04:05:27 GMT

title: Two dimensional steady state heat conduction in exchanger tubes by using the meshfree boundary integral equation method

Support motion of a finite bar with an external viscous damper

Fri, 12 Jan 2024 04:05:25 GMT

title: Support motion of a finite bar with an external viscous damper

Support motion of a finite bar with an external spring and a damper

Fri, 12 Jan 2024 04:05:22 GMT

title: Support motion of a finite bar with an external spring and a damper

Vibration analysis of a finite bar with an external spring on one side and the support motion on the other side

Fri, 12 Jan 2024 04:05:20 GMT

title: Vibration analysis of a finite bar with an external spring on one side and the support motion on the other side

Estimation biases of design wind speed due to mean occurrence rate in the Poisson process assumption

Mon, 13 Nov 2023 04:06:14 GMT

title: Estimation biases of design wind speed due to mean occurrence rate in the Poisson process assumption

應用集成學習和CNN混合模型於颱風路徑分類

Mon, 13 Nov 2023 04:06:11 GMT

title: 應用集成學習和CNN混合模型於颱風路徑分類