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羅實¹，孟祥靖¹，楊雷²

（1.中建三局第三建設工程有限責任公司，湖北 武漢 430000；

2.中交建冀交高速公路投資發展有限公司，河北 石家莊 050000）

摘 要：為避免橋梁路基沉降導致交通安全隱患，研究混凝土連續橋梁填石路基周圍土體沉降控制方法。通過填石路基周圍土體應力變化選取適宜填石材料，采用振動壓實法壓實土體及石料，控制混凝土連續橋梁填石路基周圍土體沉降。結果表明，在同等壓力作用下,粒徑較小的填石材料對填石路基周圍土體進行壓實效果較好；填石路基周圍土體坡率為1:1.8時，土體穩定系數最高；通過壓實填石路基周圍土體方法控制沉降，孔隙率及沉降率均符合路基設計規范壓實標準；工程結束后一年內填石路基周圍土體沉降值較低。

關鍵詞：混凝土；連續橋梁；填石路基；周圍土體；沉降控制；振壓實法

中圖分類號：U416                    

文獻標志碼：A            

文章編號：1005-8249（2024）02-0103-05

DOI：10.19860/j.cnki.issn1005-8249.2024.02.019

LUO Shi¹,MENG Xiangjing¹,YANG Lei²

 

(1.The Third Construction Co.， Ltd of China Construction Third Engineering Bureau,Wuhan 430000，China;

2.Zhong Jiao Jian Ji Jiao Highway Investment Development Co.LTD,Shijiazhuang 050000，China)

Abstract: In order to avoid the hidden danger of traffic safety caused by the settlement of bridge subgrade, the control method of soil settlement around the rockfill subgrade of concrete continuous bridge is studied. Select appropriate rockfill materials through the change of soil stress around the rockfill subgrade, and compact the soil and stone with vibration compaction method to control the settlement of soil around the rockfill subgrade of concrete continuous bridges. The results show that under the same pressure，the soil around the rockfill subgrade is 1:1.8, the soil stability coefficient is the highest; The settlement is controlled by compacting the soil around the rock-filled subgrade, and the porosity and settlement rate meet the compaction standard of subgrade design specifications; The settlement value of soil around the rockfill subgrade is low one year after the completion of the project observed by the inclinometer.

Keywords: concrete; continuous bridge; rockfill roadbed; surrounding soil; settlement control; vibration compaction method

 

 

作者簡介：羅實（1990-），男,本科，工程師，主要研究方向：隧道、橋梁施工管理。

通信作者:孟祥靖（1986-），男,本科，高級工程師，主要研究方向：隧道、橋梁施工管理。

收稿日期：2023-09-26