综合精品_淫语对白_亚洲一线二线在线观看_自偷自拍av_女m被主人虐玩调教91_青草精品视频_一乃葵在线_村上里沙在线观看_国产精品刺激_日韩精品视频免费_国产又黄又猛又粗_3d蒂法精品啪啪一区二区免费_日韩一本在线_奇米精品一区二区三区四区_日本三级黄色录像

鄭其華¹ ,  薛    齊²

( 1 .  云南交通職業(yè)技術(shù)學(xué)院 ，昆明 650000 ;  2.  浙江交投交通建設(shè)有限公司 ，杭州 310000)

摘   要 ：為了提高預(yù)測(cè)結(jié)果精度，提出基于灰色理論模型和非線性映射的大跨度公路橋梁樁基極限承載力預(yù)測(cè)方法。根據(jù)大跨度公路橋梁樁基的受力區(qū)域計(jì)算荷載傳遞參數(shù)，建立灰色理論模型對(duì)參數(shù)序列進(jìn)行還原處理，對(duì)還原后的參數(shù)進(jìn)行非線性映射，降低參數(shù)維度，計(jì)算樁基承載力并基于計(jì)算結(jié)果進(jìn)行預(yù)測(cè)。結(jié)果表明：所 提方法預(yù)測(cè)的均方誤差較低，均值僅為 0. 042,  預(yù)測(cè)結(jié)果較為準(zhǔn)確，滿足了大跨度公路橋梁樁基的施工設(shè)計(jì)需求。

關(guān)鍵詞：極限承載力預(yù)測(cè) ；大跨度公路橋梁 ；樁基 ；灰色理論模型 ；非線性映射 ；橋梁樁基承載力 

中圖分類號(hào)：TU473 . 1 + 6           

文獻(xiàn)標(biāo)志碼：A            

文章編號(hào)： 1005- 8249  (2025)  02- 0160- 04 

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .02.027

ZHENG Qihua¹  ,  XUE Qi²

( 1 . Yunnan Communications Vocational and Technical College ,   Kunming 650000 ,   China;

2. Zhejiang Jiaotou Transportation Construction Co . ,   Ltd. ,   Hangzhou 310000 ,   China)

Abstract: Conventional prediction of the ultimate bearing capacity of long-span highway bridge pile foundation mainly uses the method of extracting characteristic parameters for iterative optimization to obtain the prediction results, ignoring the influence of characteristic parameter dimensions on the prediction results, resulting in a large Mean squared error of the prediction results. Therefore, a prediction method of the ultimate bearing capacity of long-span highway bridge pile foundation based on the grey theory model and nonlinear mapping is proposed. The load transfer parameters are calculated according to the stress area of the pile foundation of the long-span highway bridge, and the grey theoretical model is established to restore the parameter sequence. The restored parameters are nonlinear mapped to reduce the parameter dimensions, calculate the bearing capacity of the pile foundation, and predict based on the calculation results. The experimental results show that the Mean squared error of the prediction results obtained after the proposed application is low, the average value is only 0.042, and the prediction results are relatively accurate, meeting the construction design requirements of long-span highway bridge pile foundations.

Keywords: prediction of ultimate bearing capacity; large span highways; highway bridge pile foundation; grey theory model; nonlinear mapping; bearing capacity of bridge pile foundation

基金項(xiàng)目： 云南交通職業(yè)技術(shù)學(xué)院科學(xué)研究重點(diǎn)基金項(xiàng)目 (2023KJ002) 。

作者簡(jiǎn)介：鄭其華  (1973—) ,  男，碩士，副教授／高級(jí)工程師，研究方向：道路與橋梁工程勘察 、設(shè)計(jì) 、施工、檢測(cè)等專業(yè) 技術(shù)理論研究及實(shí)踐應(yīng)用。

收稿日期：2023- 08- 18