Proceedings of theChinese Society for Electrical Engineering Proceedings of the Chinese Society of Electrical Engineering Proceedings of the ninth national conference on structural engineering Proceedings of the nineteenth national conference on structural engineering Proceedings of the ninth national conference on structural engineering Proceedings of the eighth national conference on structural engineering Proceedings of the seventh national conference on structural engineering Proceedings of the twentieth national conference on structural engineering Proceedings of the 32nd national conference on structural engineering Proceedings of the 26th national conference on structural engineering