超高海拔高性能纖維混凝土在風(fēng)電基礎(chǔ)工程中的應(yīng)用研究

摘 要：隨著對(duì)清潔、可再生能源的需求增加，風(fēng)能作為一種重要的能源形式受到廣泛關(guān)注。然而，在風(fēng)電基礎(chǔ)工程中，常規(guī)混凝土在高海拔環(huán)境下面臨著挑戰(zhàn)，為了解決這些問(wèn)題，該文研究高性能纖維混凝土在風(fēng)電基礎(chǔ)工程中的應(yīng)用。通過(guò)數(shù)值模擬分析，研究高性能纖維混凝土風(fēng)電基礎(chǔ)的力學(xué)性能和變形特性。研究結(jié)果表明，隨著集中荷載的增加，風(fēng)電基礎(chǔ)的承載能力逐漸增強(qiáng)，但其所受到的最應(yīng)力的增長(zhǎng)幅度逐漸減小；同時(shí)，最大應(yīng)力出現(xiàn)在圓形承臺(tái)的正下方，并且隨著集中荷載的增加，最大應(yīng)力所在區(qū)域的范圍也逐漸擴(kuò)大。隨著所施加的集中荷載逐漸增大，風(fēng)電基礎(chǔ)的橫向位移和豎向位移均逐漸增大。等待風(fēng)電基礎(chǔ)達(dá)到相應(yīng)的強(qiáng)度等級(jí)后，對(duì)其現(xiàn)場(chǎng)混凝土強(qiáng)度、地基承載能力等進(jìn)行現(xiàn)場(chǎng)檢測(cè)，檢測(cè)結(jié)果均滿足工程規(guī)范需求。

關(guān)鍵詞：超高海拔；高性能纖維混凝土；風(fēng)電基礎(chǔ)工程；數(shù)值模擬；工程實(shí)際應(yīng)用

中圖分類號(hào)：TU528.572 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：2095-2945（2024）23-0001-04

Abstract： Due to the rising demand for clean and renewable energy， wind energy has become a prominent focus as a vital energy source. Nonetheless， the use of traditional concrete encounters obstacles in ultra-high-altitude settings within wind power engineering. To tackle these challenges， this study explores the utilization of high-performance fiber-reinforced concrete in wind power foundation engineering. The mechanical properties and deformation characteristics of wind power foundations constructed with high-performance fiber-reinforced concrete are investigated through numerical simulation analysis. The research findings reveal that as concentrated loads increase， the bearing capacity of wind power foundations gradually improves， albeit at a declining rate of maximum stress. Additionally， the maximum stress is concentrated directly beneath the circular foundation， and the area of maximum stress expands progressively with higher concentrated loads. As the applied concentrated load intensifies， the lateral and vertical displacements of wind power foundations also gradually increase. Following the attainment of the corresponding strength grade by the wind power foundation， on-site tests are performed to evaluate its concrete strength and foundation bearing capacity， which successfully fulfill the requirements stipulated by engineering specifications.

Keywords： ultra-high-altitude; high performance fiber reinforced concrete; wind power foundation engineering; numerical simulation; practical engineering application

隨著能源需求的不斷增長(zhǎng)，同時(shí)在新時(shí)代下對(duì)環(huán)境保護(hù)要求的不同，風(fēng)能受到了越來(lái)越多的關(guān)注和重視。風(fēng)電基礎(chǔ)工程作為風(fēng)能利用的核心環(huán)節(jié)之一，其穩(wěn)定性和可靠性對(duì)風(fēng)電場(chǎng)的運(yùn)行和發(fā)電效率至關(guān)重要?；炷猎陲L(fēng)電基礎(chǔ)工程中扮演著重要的角色，然而在高海拔環(huán)境下，常規(guī)混凝土面臨著一系列挑戰(zhàn)，如高風(fēng)速、低溫和強(qiáng)輻射等。這些因素可能導(dǎo)致常規(guī)混凝土的強(qiáng)度、韌性和耐久性下降，從而影響風(fēng)電基礎(chǔ)工程的安全和可靠性?！?br>