CAJ | 학술논문

针对复杂环境下城市高架桥爆破拆除工程的特点，提出了其精细爆破的关键技术。提出采用墩柱爆后钢筋骨架的初弯曲压杆失稳力学模型和高架桥连续塌落动力学模型等进行关键参数的定量化设计，运用水压爆破技术对多室箱梁进行爆破破碎，采用“宽间隔、长延时、互动有序”非电接力交叉复式起爆网路可确保超长延时起爆网路的安全准爆，采用物理模型试验方法对爆破方案、关键参数等的合理性进行验证，采用多种综合防护技术进行有害效应的预测与控制，采用专业化、协同化、精细化、执行力(SCPE)的项目管理方法进行爆破拆除工程的精细管理。该精细爆破关键技术可为复杂环境下城市高架桥爆破拆除工程实践提供参考。
침대복잡배경하성시고가교폭파탁제공정적특점，제출료기정세폭파적관건기술。제출채용돈주폭후강근골가적초만곡압간실은역학모형화고가교련속탑락동역학모형등진행관건삼수적정양화설계，운용수압폭파기술대다실상량진행폭파파쇄，채용“관간격、장연시、호동유서”비전접력교차복식기폭망로가학보초장연시기폭망로적안전준폭，채용물리모형시험방법대폭파방안、관건삼수등적합이성진행험증，채용다충종합방호기술진행유해효응적예측여공제，채용전업화、협동화、정세화、집행력(SCPE)적항목관리방법진행폭파탁제공정적정세관리。해정세폭파관건기술가위복잡배경하성시고가교폭파탁제공정실천제공삼고。
Key technologies of precision blasting were put forward based on characteristics of urban viaduct blasting demolition in complicated surroundings. Initial bending instability me-chanics model of reinforcing steel bar frame of blasting fragmented pier and sequenced col-lapsed dynamics model were established for quantitative blasting design. Technologies of water pressure blasting were applied in multi-cell box girder fragmentation. The initiation network of non-electric duplication crossover was adopted for safety and reliability of ultra-long delay. The rationality of blasting scheme and parameters were validated by physical model test. Adverse ef-fects were forecasted and controlled by integrated protective technologies. Specialization co-operation,precision,execution(SCPE)project management method was put forward for preci-sion management. Key technologies of precision demolition blasting can provide reference for similar projects.