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收集所有交通大學研究人員與學生個人或團體所發表之各項學術著作，涵蓋期刊論文、教師專書、學位論文等項。;;Collections of Publications of NCTU Researchers and Students Like Journal Papers and Thesis.

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🏛️國立陽明交通大學機構典藏

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建置橋梁斷橋警示系統之研究(二)
(2011)
林志平
;
Lin, Chih-Ping
;
國立交通大學
橋梁為聯繫公路系統之重要設施，目前公路主管機關對於橋梁發生災害或有發生災害危險之虞，多訂有封橋標準作業程序，以保障用路人生命財產安全，並使公路運輸功能所遭受損害減至最低程度，但汛期中難以全面針對每座橋梁進行全時間的監控，爰此，交通部運輸研究所於99年度辦理「建置橋梁斷橋警示系統之研究」，提出三種不同複雜程度之警示系統，以便於橋梁破壞發生時提供用路人及養護單位即時之資訊，提醒用路人前方有危險，進而降低災害後續可能造成之損傷。本計畫主要目的係基於簡單、可靠（避免錯誤警報）、設置及維護成本低、易於組裝、校正及維護等特性，針對前期研究提出檢討報告，並進一步精進與改良，提出更經濟且更符合實務單位需求之系統研發報告，以期後續能順利推廣至公路管理機關。
水庫安全監測問題評析與非破壞性檢測技術應用之研究
(2005)
林志平
;
Lin, Chih-Ping
;
國立交通大學工學院防災工程研究中心
由於台灣地區許多重要水庫隨著庫齡逐漸增加，監測儀器亦因屆齡損壞致安全監測資料逐漸減少，實有必要進行水庫安全監測之問題評析及提昇非破壞性檢測技術在水庫安全評估之應用，以強化水庫安全評估及平常安全檢查之落實。常見有關水庫安全監測之問題包括儀器損壞比例偏高及監測資料常出現不合理現象，以致監測資料無法真實回饋數值模擬進行綜合評估；在現地檢查方面，一般以目視檢查為主，而數值校核分析所需要之材料參數則必須採用破壞性之補充鑽探，未能有效利用非破壞性監測之技術，以檢查壩體內部之情形並提供數值分析所需之參數。本計畫之目的是依據蓄水庫潛在破壞模式分類，有系統的檢討水庫安全監測之相關問題，收集各種可行之非破壞性檢測方法，針對較重要的技術進行初步測試，並研擬監測與檢測改善方案及未來研究規劃。本計畫主要探討重點包括： 1. 水庫潛在破壞模式之分類與案例收集 2. 各項監測儀器適用性之檢討 3. 現有水庫安全監測之問題評析 4. 各項非破壞性檢測方法適用性之探討 5. 壩體重要檢測技術初步測試與監測化可行性評估 6. 研擬監測與檢測改善方案及未來研究規劃本團隊近幾年多次參與執行「蓄水庫安全評估報告審查專業協助與教育訓練」計畫，對於水庫安全監測之現況與問題具有深入瞭解。主持人林志平教授在工程監測與地球物理探測技術之改良研發方面，有許多創新的研究成果；協同主持人潘以文教授是壩體動態分析的專家，所研發之分析軟體廣為顧問公司執行水庫安全評估工作時所採用，對於水庫工程問題有多年的經驗。因此，本研究團隊充分瞭解本計畫之特性與需求，期能對於水庫安全監測與非破壞性檢測提出務實的改善方案與建議。
New TDR waveguides and data reduction method for monitoring of stream and drainage stage
(2013-11-15)
Chung, Chih-Chung
;
Lin, Chih-Ping
;
Wu, I. -Ling
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Chen, Ping-Hung
;
Tsay, Ting-Kuei
Less known in the field of hydrological measurements in civil engineering, time domain reflectometry (TDR) has been developed as a new solution to some of the more difficult level measurement problems. This study applied TDR methodology to provide two new designs for a water level sensing waveguide that can be applied in difficult field conditions such as in an underpass, tunnel, culvert, or sewer, etc. Two types of water level sensing waveguides are presented, including a rigid assembled coaxial pipe and a flexible adhered parallel wire. The corresponding data reduction procedure is also proposed to account for uncertainty of travel time analysis and calibrate the velocity of pulse propagation along the waveguides. The satisfactory performance of both the proposed TDR waveguides and data reduction method was experimentally validated. A field case study further demonstrated the feasibility of the TDR technique for water level measurements under typical urban drainage conditions. (C) 2013 Elsevier B.V. All rights reserved.
Metamorphosing the SASW Method by 2D Wavefield Transformation
(2012-08-01)
Lin, Chun-Hung
;
Lin, Chih-Ping
;
交大名義發表
;
National Chiao Tung University
Dispersion analysis in surface wave testing is conventionally associated with a certain method of data acquisition, such as phase angle analysis in the two-station spectral analysis of surface wave (SASW) method and two-dimensional (2D) multistation wavefield transformation in the multistation analysis of surface wave (MASW) method. A new procedure has been developed to reconstruct the SASW data as MASW-imitating data, taking advantage of the 2D multistation wavefield transformation to better analyze the SASW data. Numerical simulations and a real-world example demonstrate the feasibility of this procedure, but also reveal an unwanted side effect associated with aliasing. A common-receiver survey is proposed for future experiments to eliminate this unwanted side effect and at the same time increase the lateral resolution. DOI: 10.1061/(ASCE)GT.1943-5606.0000657. (C) 2012 American Society of Civil Engineers.
Effect of lateral heterogeneity on surface wave testing: Numerical simulations and a countermeasure
(2007-06-01)
Lin, Chih-Ping
;
Lin, Chun-Hung
;
土木工程學系
;
Department of Civil Engineering
The surface wave (S-wave) method has gained popularity in engineering practice for determining S-wave velocity depth profiles. A growing trend is towards the application of S-wave testing for spatially 2-D S-wave velocity tomography, ignoring the assumption of horizontally layered medium. A fourth-order velocity-stress finite difference method is used to perform numerical simulations of S-wave testing in earth models with lateral variation. Results show that the lateral heterogeneity induces a non-stationary property in the space domain, resulting in false depth-related dispersion or higher modes if conventional approach based on stationary assumption is used for the dispersion analysis. Artifacts maybe introduced in spatially 2-D S-wave velocity imaging if the effect of lateral heterogeneity is not accounted for. As a potential countermeasure, a high-lateral-resolution S-wave method is proposed to reduce the effect of lateral heterogeneity while maintaining the resolution and depth range of dispersion analysis. It consists of a walk-away survey and a phase-seaming procedure when synthesizing seismograms with different nearest source-to-receiver offset, allowing wide-wavelength dispersion analysis within a small spatial range. The proof of concept is given with several numerical examples. They show that the high-resolution S-wave method can greatly alleviate the effect of lateral heterogeneity and increase spatial resolution. (c) 2006 Elsevier Ltd. All rights reserved.
High concentration suspended sediment measurements using time domain reflectometry
(2011-04-20)
Chung, Chih-Chung
;
Lin, Chih-Ping
;
土木工程學系
;
防災與水環境研究中心
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Department of Civil Engineering
The existing methods of suspended sediment concentration (SSC) monitoring provide a measurement accuracy significantly influenced by the particle size of suspended sediments, function only under limited measurement range and are not cost effective for field maintenance as well as wide spatial coverage. The paper introduces an innovative SSC monitoring methodology based upon time domain reflectometry (TDR), especially emphasizing on optimum TDR measurement accuracy investigated theoretically and experimentally. Pertinent probe design, probe calibration, as well as data reduction procedures were proposed. Ultimately, the approach can achieve the measurement accuracy to adapt the derived hardware resolution and beyond. In addition, the performance evaluation was carried out considering possible influence factors including water salinity, sediment types and particle sizes, and leading cable lengths. TDR SSC measurements indicate insensitive to sediment particle sizes. After proper calibration, the measurements are also insensitive to water electrical conductivity and not affected by leading cable resistances. There are further advantages of the TDR method including high measurement range from 2 to at least 300 g L(-1), easy calibration, robustness, maintainability, and cost-effective multiplexing. (C) 2011 Elsevier B.V. All rights reserved.
Quantification of Cable Deformation with Time Domain Reflectometry-Implications to Landslide Monitoring
(2009-01-01)
Lin, Chih-Ping
;
Tang, Shr-Hong
;
Lin, Wen-Chin
;
Chung, Chih-Chung
;
交大名義發表
Time domain reflectometry (TDR) technology has become a valuable tool for detecting displacements and locating shear planes in rock or soil slopes. It is based on transmitting an electromagnetic pulse into a coaxial cable grouted in rock or soil mass and watching for reflections of this transmission due to cable deformity induced by the ground deformation. Early detection of localized shear deformation in soft soils and quantifying the shear displacement using TDR remains a challenging work. The TDR response due to localized shear deformation is affected by cable resistance, soil-grout-cable interaction, and shear bandwidth. A comprehensive TDR wave propagation model considering cable resistance is introduced to model TDR response to cable deformity. Effects of the influencing factors on the relationship between the reflection spike and the shear displacement are investigated through laboratory tests and numerical simulations. The implications to enhancing TDR response and quantifying shear displacement are stressed. Practical suggestions are made, including procedure for correcting resistance effect, selection of cable and grout, and how to quantify shear displacement using TDR.

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