调查确定，事故直接原因为：涉事桥梁临时支撑塔的斜拉系统中，由两段拼接而成的承重梁连接处使用了劣质螺栓，其承载能力较国家标准平均下降约41%，严重削弱了连接点强度；承重梁制作与安装质量不达标，未按设计要求开孔，现场安装时为对齐而擅自扩孔，改变了螺栓群的受力机制，进一步降低了承载能力；在主桥合龙前对西宁侧支撑塔4号拉索进行第二阶段张拉后，承重梁承受了施工阶段的最大负荷，超出了劣质螺栓的极限承载力，导致螺栓发生剪切破坏，进而使承重梁从连接处断裂，最终造成整个斜拉系统失效，主跨钢拱结构与桥面结构瞬间失去拉力支撑而急速坍塌。
Consequently, my perspective stems not from speculative forecasting but from hands-on implementation. During the past half-year, I've fundamentally reoriented my technical team around AI-centric methodologies. Previously, I detailed the operational framework enabling this shift—our approach to process design, measurement systems, and safety protocols. Now, I wish to broaden the discussion beyond technical details to examine the broader implications for our industry as software creation undergoes radical transformation.
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這句話的意思是清楚的：北京歡迎歐洲靠近，但拒絕歐洲以「去風險」或產業保護為由築牆。