Old bungalow under the plane tree
After a hundred years of ups and downs, witness the changes of the times
Countless celebrity tycoons
They all left their mark on their lives here
Today, we invite you to join us
Stroll through the Hengfu landscape area
Feel the cultural charm under the plane tree
Li Guohao's former residence
34 Fuxing West Road
Li Guohao's former residence is located in Weile Apartment, No. 34 Fuxing West Road, formerly known as Weile Jingshe, built in 1934, designed by Zhan An Foreign Firm, covering an area of 1720 square meters, with a construction area of 3797 square meters, and a car room annex of 802 square meters, which is a modern point-style architectural style apartment residence. The building is a thirteen-story reinforced concrete structure, with two wings falling one floor, standing symmetrically, vertical three-section arrangement, protruding in the middle, with a string of selected semi-circular balconies as the center of the composition, and two sides forming vertical lines for the sleeping balconies; The concrete mortar façade, the vertical lines in the middle of the façade and the protruding semi-circular balcony are dark red paint, the rest are light yellow paint, the top and south sides of the gable are decorated with repeating lines, and there is a small garden in front of the building. After liberation, Lü Meng, Huang Zhun and his wife, Chen Liting, Wu Qiang, Lai Shaoqi, Jun Qing, Wang Xiyan and a number of other cultural people lived here. On February 15, 1994, the Shanghai Municipal People's Government announced it as an excellent historical building in the city.
Biography
Lee Kwok Ho
(1913-2005) A native of Meizhou, Guangdong Province, he is an expert, educator and social activist in bridge engineering and mechanics. He graduated from Tongji University in 1936. From 1938 to 1945, he specialized in bridge engineering and structural mechanics at the Technical University of Darmstadt, Germany. After returning to China in 1946, he served as an engineer in the Shanghai Municipal Public Works Bureau and a professor at Tongji University. After the founding of the People's Republic of China, he successively served as vice president and president of Tongji University, and chairman of the Sixth Cppcc Committee of Shanghai Municipality. He has been employed as a member and director of the Technical Committee of Wuhan Yangtze River Bridge and Nanjing Yangtze River Bridge, the chief consultant of the Engineering and Technical Committee of Baoshan Iron and Steel General Plant, the leader of the expert group of Shanghai Nanpu Bridge, and the leader of the Shantou Bay and Humen Pearl River Advisory Group. In 1994, he was elected as the first batch of academicians of the Chinese Academy of Engineering. His specialty in bridge engineering has reached the leading level in China and has a significant impact in the world, and is one of the world's top ten famous structural engineering experts.
Character stories
Solve the mystery of "bridge shaking"
On October 15, 1957, the first bridge of the Yangtze River in China, the Wuhan Yangtze River Bridge, was completed and opened to traffic. The mighty crowd rushed shoulder to shoulder and headed for the bridge. Suddenly the bridge shook. What causes the bridge to shake? Li Guohao has been thinking about this problem. Because I was in charge of national defense scientific research tasks in those years, I really didn't have time to study, so I put it on hold. In 1968, when the news of the opening of the Nanjing Yangtze River Bridge came, he feared that the bridge would shake again. Because after the Wuhan Yangtze River Bridge shook, in order to ensure that nothing was lost, when the Nanjing Yangtze River Bridge was built, the steel truss beam was widened by 4 meters, and an additional 4,000 tons of steel were used. However, everyone still has no bottom in their hearts, can this work? Lee decided to solve the puzzle. He had in mind the method he used when he studied in Germany. He bridged a complex multi-belly rod diamond truss system into a continuous system, successfully derived the equivalent relationship of stiffness conversion using differential equations, and verified it with model experiments. Yes, use this line of thinking to study the stability and vibration of the bridge. In this way, Li Guohao, with his strong memory and solid basic skills, began to calculate according to the basic data of the two bridges.
In April 1971, Li Guohao theoretically gave the answer to the shaking of the bridge. But he knew that theoretical calculations alone would not do so, and that they would have to be verified by experiments. But there was no tool to make a model of the steel bridge at that time, so he thought about it and decided to replace it with celluloid. His son-in-law helped buy back a large pile of waste celluloid slide rules from Central Mall. That night, Li Guohao eagerly put on the pot stove to boil water, and the celluloid he put in became soft, he pressed, cut, pulled, and began to make a model of the bridge. A year later, Li Guohao's experimental data finally came out, which was completely consistent with the theoretical calculation results. In 1974, at the National Steel Vibration Scientific Research Collaboration Conference, he reported the research results: the shaking that occurred when the Wuhan Yangtze River Bridge was opened to traffic was due to the bending and torsional resonance of the bridge caused by the sudden load of the crowd on the bridge, and there was no problem with the structure of the bridge itself. Therefore, the 4,000 tons of steel used in the Nanjing Yangtze River Bridge is not necessary. "The mystery that has plagued us for 17 years has been solved!" The audience applauded thunderously.
Lee Kwok-ho (third from left) with friends
Years later, Li Guohao explained the reason for the shaking of the bridge in popular language: "It's like sitting on a small wooden boat, when you step on the boat with one foot, the boat will shake; When you go up on both feet, the boat quickly stops shaking. The shaking of the bridge is a situation in which many people suddenly hug it. And the bridge structure itself is not a problem. ”
In 1975, the 110,000-word book "Truss Torsion Theory : Torsion, Stability and Vibration of Truss Bridges" was published. In 1983, this achievement won the third prize of the National Natural Science Award. This theory of Li Guohao greatly saves manpower and material resources for the post-built bridge.
Li Guohao (Wu Haijia painting)