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我省民间桥梁建设中钢筋混凝土装配式结构,发展迅速,至1964年底,新建和改建(利用老桥台加做装配式桥面)的共达1,500座,总长约22,000余米。分布很广,以嘉兴地区各县为最多。大部分用于平原水网地区中小河道,少量用于丘陵地区自然河流。最长的有瑞安县的一座全长104米,一般自15米至30米。桥跨自4米至15米,桥面宽度1～3米,荷载标准每平方米均布载重300公斤,集中荷载1吨。两年来的经验证明,钢筋混凝土装配式结构是改造民间大量木桥的主要方向,平原水网地区最为适
The construction of reinforced concrete in civil bridge construction in our province is developing rapidly. By the end of 1964, a total of 1,500 new and reconstructed (using the bridge abutment plus fabricated bridge deck) had a total length of about 22,000 meters. Distribution is very wide, the most counties in Jiaxing. Most of them are used for medium and small river courses in plain water networks and a small amount for natural rivers in hilly areas. The longest a Ryan County, a full-length 104 meters, usually from 15 meters to 30 meters. Bridge span from 4 meters to 15 meters, the bridge width of 1 to 3 meters, the load standard per square meter are loaded with a weight of 300 kg, a load of 1 ton. The experience of the past two years proves that the reinforced concrete assembled structure is the main direction of transforming a large number of civil-owned wooden bridges, and the plain water network area is the most suitable