NO.7 • DECEMBER 2008 - The Hong Kong Polytechnic University

NO.7 • DECEMBER 2008 - The Hong Kong Polytechnic University NO.7 • DECEMBER 2008 - The Hong Kong Polytechnic University

28.05.2014 Views

Recent Events 活 動 剪 影 FACULTY OF CONSTRUCTION AND LAND USE SEMINARS 建 設 及 地 政 學 院 研 討 會 Dynamic Response of Fibre Metal Laminates Subjected to Impact Dr. Zhongwei Guan, Senior Lecturer in Structural Engineering at the University of Liverpool, UK discusses the Dynamic Response of Fibre Metal Laminate (FMLs) Subjected to Impact. FMLs, thin layers of metal sheets and unindirectional fibre layers embedded in an advhesive system were patented over two decades ago, and have superior material properties to resist impact loading and fatigue. Currently they are being used in the manufacturing of the American C-17 transport aircraftscargo doors whilst Glass-Reinforced (GLARE) FMLs are being used in the manufacturing of the upper fuselage of the A380. Using FMLs as skins, novel sandwich structures can be made with metallic foam core or SLM lattice core. They developed numerical models using explicit algorithms to simulate deformation and failure modes of FMLs subjected to projectile impact and blast loading. All models are validated against experimental results, which are used to optimize FMLs. Such work had huge potential in developing impact/blast resistant structures, especially in the aerospace industry. (FMLs) Zhongwei Guan (FMLs)FMLs C-17 /GLARE A380 Consideration of Vertical Acceleration Effects in Seismic Design of Concrete Highway Bridges Sashi K. Kunnath, Professor of Structural Engineering at the University of California at Davis conducted this seminar based on a comprehensive series of simulations carried out on a range of typical bridge configurations to isolate the effects of vertical motions on the seismic response of ordinary reinforced concrete highway bridges. Results reveal that vertical ground motions can have a significant effect on (i) the axial force demand in columns; (II) moment demands at the face of the bent cap, and (iii) moment demands at the middle of the span. The first two issues are less of a concern in the present study since the axial capacity of the columns and the moment capacity of the girders at the face of the bent cap are generally adequate to resist the increase in the respective demands due to vertical effects. On the other hand, the amplification of negative moments in the mid-span section is identified as the primary issue that should be addressed in the context of existing seismic guidelines in California. In particular, for the current requirement, the vertical effects are considered as the equivalent to 25% of the dead load applied in the upward and downward directions. The reinforcement resulting from this requirement is found to be inadequate for a significant number of cases examined in this study. Sashi K. Kunnath (i) (ii)(iii) 25% 18

Recent Events 活 動 剪 影 BRE Students Joining Study Tour — Student Accounts 建 築 及 房 地 產 學 系 學 生 參 加 遊 學 團 — 活 動 後 感 Berlin Seoul Berlin, the capital of Germany was destroyed seriously during World War II (WWII) yet has recovered and transformed itself into an international city. As Germany thinks highly of the conservation of historical buildings and the implementation of new ideas into them, we feel this to be the way forward for future property development in Hong Kong. Hence we selected Berlin as the destination of our study tour. During our seven-day tour, we visited the local government department, the Federal Office for Building and Regional Planning to investigate the topic of the development and application of public-private partnership (PPP). Although the application of PPP in Germany was still in its infancy, there were some great achievements. We visited Faculty VI of Technische University Berlin and have discussed with them the topics of the property market both in Hong Kong and Berlin. We also made presentations to them based on the topic of the redevelopment achievements in Hong Kong. Finally, we participated in an exhibition organized by the DENA Agency to visit three energy-efficient buildings. After WWII, Germany concentrated on the issues of town planning, focusing on the rehabilitation of historical monuments. In our study tour, we visited two monuments, the Reichstag Building and the Kaiser –Wilhelm –Gedächtniskirche, both of which are excellent examples of the fusion of ancient and modern styles with minimum destruction to their original characteristics. The Reichstag Building has retained its outlook but incorporated modern features, for example, the iconic large glass dome at the top of the building. The Kaiser –Wilhelm –Gedächtniskirche and the newly-built neighborhood church have induced an impressive harmonized effect. With the aid of our tour guide – Debra, we have all learned a lot about the history and architecture of Germany. In the previous summer vacation, I have been to Seoul, Korea with my colleagues. During these 7-days, we had visited two famous Korean Universities - Hanyang University and Seoul National University. They presented some of their research on Korean construction projects to us and provided a sharing sessionfor discussion. We also visited the Hyundai Engineering & Construction Company who enlightened us with the implementation of advanced technology in housing as we visited their construction sites. This enhanced our knowledge of Korean building technology. Compared to Hong Kongs construction sites, the environment of the Korean ones are better. Unfortunately, we encountered a political demonstration on the trip, thus some of our destinations were cancelled. During the preparation stage, we had to face many problems such as communicating with the Korean Universities, seeking sponsorship and planning the schedule etc. As President of the Study Tour, I have gained valuable experience from the challenges. I would like to thank my professors and committee members for their help in the tour because as they have contributed so much to the trip. - Debra – 19

Recent Events<br />

活 動 剪 影<br />

BRE Students Joining Study Tour — Student Accounts<br />

建 築 及 房 地 產 學 系 學 生 參 加 遊 學 團 — 活 動 後 感<br />

Berlin<br />

Seoul<br />

Berlin, the capital of Germany was destroyed seriously during World War<br />

II (WWII) yet has recovered and transformed itself into an international city.<br />

As Germany thinks highly of the conservation of historical buildings and the<br />

implementation of new ideas into them, we feel this to be the way forward<br />

for future property development in <strong>Hong</strong> <strong>Kong</strong>. Hence we selected Berlin<br />

as the destination of our study tour.<br />

During our seven-day tour, we visited the local government department,<br />

the Federal Office for Building and Regional Planning to investigate the<br />

topic of the development and application of public-private partnership<br />

(PPP). Although the application of PPP in Germany was still in its infancy,<br />

there were some great achievements. We visited Faculty VI of Technische<br />

<strong>University</strong> Berlin and have discussed with them the topics of the property<br />

market both in <strong>Hong</strong> <strong>Kong</strong> and Berlin. We also made presentations to<br />

them based on the topic of the redevelopment achievements in <strong>Hong</strong> <strong>Kong</strong>.<br />

Finally, we participated in an exhibition organized by the DENA Agency to<br />

visit three energy-efficient buildings.<br />

After WWII, Germany concentrated on the issues of town planning,<br />

focusing on the rehabilitation of historical monuments. In our study<br />

tour, we visited two monuments, the Reichstag Building and the Kaiser<br />

–Wilhelm –Gedächtniskirche, both of which are excellent examples of<br />

the fusion of ancient and modern styles with minimum destruction to their<br />

original characteristics. <strong>The</strong> Reichstag Building has retained its outlook but<br />

incorporated modern features, for example, the iconic large glass dome<br />

at the top of the building. <strong>The</strong> Kaiser –Wilhelm –Gedächtniskirche and the<br />

newly-built neighborhood church have induced an impressive harmonized<br />

effect. With the aid of our tour guide – Debra, we have all learned a lot<br />

about the history and architecture of Germany.<br />

<br />

<br />

<br />

<br />

In the previous summer vacation, I have been to<br />

Seoul, Korea with my colleagues. During these<br />

7-days, we had visited two famous Korean<br />

Universities - Hanyang <strong>University</strong> and Seoul National<br />

<strong>University</strong>. <strong>The</strong>y presented some of their research on<br />

Korean construction projects to us and provided a<br />

sharing sessionfor discussion.<br />

We also visited the Hyundai Engineering &<br />

Construction Company who enlightened us with<br />

the implementation of advanced technology<br />

in housing as we visited their construction<br />

sites. This enhanced our knowledge of Korean<br />

building technology. Compared to <strong>Hong</strong> <strong>Kong</strong>s<br />

construction sites, the environment of the Korean<br />

ones are better. Unfortunately, we encountered a<br />

political demonstration on the trip, thus some of our<br />

destinations were cancelled.<br />

During the preparation stage, we had to face many<br />

problems such as communicating with the Korean<br />

Universities, seeking sponsorship and planning the<br />

schedule etc. As President of the Study Tour, I have<br />

gained valuable experience from the challenges.<br />

I would like to thank my professors and committee<br />

members for their help in the tour because as they<br />

have contributed so much to the trip.<br />

<br />

<br />

- <br />

<br />

<br />

<br />

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<br />

<br />

<br />

<br />

<br />

Debra <br />

– <br />

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19

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