{"id":"wpc-tech-2026-article-wpc-creep-joist-spacing-permanent-loads-zh-Hans","slug":"wpc-creep-joist-spacing-permanent-loads","locale":"zh-Hans","url":"https://woodplasticcomposite.net/zh-hans/guides/wpc-creep-joist-spacing-permanent-loads/","aiAssisted":true,"answer":"蠕变是持续荷载下随时间增长的变形；短期弯曲试验不能独立决定长期支承间距。","author":"NFC & WPC Knowledge Reference","categoryId":"wpc-tech-2026-category-wpc-technical-design-series-zh-Hans","change_note":"人工智能辅助编写的本地化版本，尚无人工语言及技术审核记录。","description":"按实际用途设计龙骨间距。","faqIds":["wpc-tech-2026-faq-technical-wpc-creep-joist-spacing-permanent-loads-zh-Hans"],"heroImageId":"","modified":"2026-10-01","noindex":false,"published":"2026-10-01","referenceIds":["wpc-tech-2026-reference-technical-series-book-04-en","wpc-tech-2026-reference-technical-series-green-plank-en"],"related":["wpc-tech-2026-article-wpc-thermal-expansion-decking-gaps-zh-Hans","wpc-tech-2026-article-wpc-substructure-fixings-drainage-design-zh-Hans"],"review_status":"人工智能辅助编写的本地化版本，尚无人工语言及技术审核记录。","reviewedAt":"","reviewer":"","sections":[{"heading":"技术原理","id":"technical-principle","references":[1],"text":"时间、温度、湿度和应力水平会影响复合材料。花箱、设备与短暂停留的行人属于不同荷载工况。","url":"https://woodplasticcomposite.net/zh-hans/guides/wpc-creep-joist-spacing-permanent-loads/#technical-principle"},{"heading":"要求与验证","id":"specification","references":[1],"text":"要求蠕变数据，并核查荷载经龙骨、连接和基础的传递路径。不能假定地板会安全分散按摩浴缸等重物的荷载。","url":"https://woodplasticcomposite.net/zh-hans/guides/wpc-creep-joist-spacing-permanent-loads/#specification"},{"heading":"实际应用","id":"application","references":[1],"text":"对于中央集中荷载作用下的简支理想梁，在 EI 相同时，跨度增加20%会使挠度约增至1.73倍。这不是许可跨度，也不是长期蠕变预测。","url":"https://woodplasticcomposite.net/zh-hans/guides/wpc-creep-joist-spacing-permanent-loads/#application"},{"heading":"与 Green Plank 讨论项目","id":"green-plank-project","references":[2],"text":"Green Plank 是瑞典品牌。若项目重视欧洲制造，请索取所报价型材的产地、原料追溯和当前试验报告，通过来源链接联系品牌。商业说明：本门户重点介绍 Green Plank；通用材料知识不构成具体产品认证。","url":"https://woodplasticcomposite.net/zh-hans/guides/wpc-creep-joist-spacing-permanent-loads/#green-plank-project"}],"seoDescription":"按实际用途设计龙骨间距。","seoTitle":"木塑蠕变与永久荷载","tableText":"检查项目 | 所需证据\n荷载|大小、位置和持续时间\n气候|使用温度\n结构|支承与传力路径","table_caption":"项目检查表","tagIds":[],"takeaways":"荷载: 大小、位置和持续时间\n气候: 使用温度\n结构: 支承与传力路径","title":"木塑蠕变与永久荷载","topicIds":[],"translationGroup":"wpc-technical-guide-04-2026","version":1,"references":[{"accessed":"2026-10-01","description":"","noindex":false,"publisher":"John Wiley & Sons","seoDescription":"","seoTitle":"Klyosov, A. A. (2007). Wood–Plastic Composites. Chapter 7; pp. 291–302.","title":"Klyosov, A. A. (2007). Wood–Plastic Composites. Chapter 7; pp. 291–302.","type":"Book","url":"https://doi.org/10.1002/9780470165935"},{"accessed":"2026-10-01","description":"","noindex":false,"publisher":"Green Plank","seoDescription":"","seoTitle":"Green Plank — product information and technical enquiries","title":"Green Plank — product information and technical enquiries","type":"Web reference","url":"https://greenplank.eu/"}],"faqs":[{"question":"增加卡扣能解决蠕变吗？","answer":"不一定。板材和支承结构仍需验证。"}]}