随着工农业的发展,木材需用量也在日益增长。节约使用木材,就成为当务之急。桥枕消耗大宗木材,降低桥枕耗量是节约木材的一条途径。若降低桥枕耗量需弄清:目前桥枕的实际使用年限;桥枕的使用寿命究竟应为多少年;决定桥枕丧失承载力的因素;如何提高桥 With the development of industry and agriculture, the demand for timber is also growing. Save on the use of wood, it has become a top priority. Bridge pillow consume bulk timber, reducing bridge pillow consumption is a way to save timber. If you want to reduce the consumption of bridge pillow need to find out: the actual age of the current bridge pillow; bridge pillow life should be how many years; determine the bridge pillow loss of capacity factors; how to improve the bridge