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彭方圓

（ 北京城建房地產開發有限公司 ，北京 100081)

摘   要： 以保障工程施工安全為目的，提出綜合樓施工深基坑變形多點視覺監測方法 。以某待測綜合樓施工工程深基坑項目為研究標靶 ，在其周圍設置測點并布設圖像傳感器采集深基坑支護樁頂 、周圍道路 、管線等位置的相關圖像 ，利用包圍盒法重建三維深基坑圖像 ，采用粗糙K均值聚類算法計算靶點范圍與中心，通過對 比原始圖像與監測圖像的標志點差異獲取深基坑的變形位移值 ，利用所得深基坑圖像的標志點位移變化量構建監測數據樣本，通過訓練 RBF 神經網絡輸出深基坑變形預測結果 。實驗結果表明 ：該方法可有效監測深基坑變形 ；深基坑周圍道路沉降的變形量最大約為 15. 12 mm , 未達到報警值 40 mm;   圍護加固結構可有效約束深基坑變形。

關鍵詞 ：軟土地區 ；復雜環境條件 ；商業綜合樓 ；施工工程 ；深基坑變形 ；多點視覺監測

中圖分類號 ：TU473           

文獻標志碼 ：A            

文章編號 ：1005- 8249  (2024)   01- 0113- 06

DOI : 10. 19860/j . cnki . issn1005- 8249. 2024. 01 . 020

 

 

PENG Fangyuan

( BUCG REAL ESTATE Co. ，Ltd. ，Beijing 100081 ,  China)

Abstract: A multi-point visual monitoring method for deformation of deep foundation pits in comprehensive building construction is proposed with the aim of ensuring construction safety. Taking a deep foundation pit project of a comprehensive building construction project to be tested as the research target, measuring points are set up around it and image sensors are deployed to collect relevant images of the top of the deep foundation pit support pile, surrounding roads, pipelines, etc. The three-dimensional deep foundation pit image is reconstructed using the bounding box method. The rough K-means clustering algorithm is used to calculate the range and center of the target points. The deformation displacement value of the deep foundation pit is obtained by comparing the difference between the original image and the monitoring image's landmark points, Construct monitoring data samples using the displacement changes of landmark points in the obtained deep foundation pit images, and output deformation prediction results of deep foundation pits through training an RBF neural network. The experimental results show that this method can effectively monitor the deformation of deep foundation pits; The maximum deformation of the road settlement around the deep foundation pit is about 15.12mm, which has not reached the alarm value of 40mm; The reinforcement structure of the enclosure can effectively constrain the deformation of deep foundation pits.

Keywords :  soft  soil area;   complex  environmental  conditions ;   commercial  complex  building;   construction  works ;   deep  foundation  pit deformation;  multi-point visual monitoring

作者簡介 ：彭方圓  ( 1979—) ,   男 ，本科 ， 工程師 ， 主要研究方向 ：建筑施工。

收稿日期 ：2023- 10- 13