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A platform for research: civil engineering, architecture and urbanism
Tunnel portal soft foundation micro pile reinforcing structure
The invention discloses a tunnel portal soft foundation micro pile reinforcing structure which comprises a micro pile reinforcing structure body and a tunnel inverted arch, a foundation layer is arranged below the tunnel inverted arch, bed rock is arranged below the foundation layer, and second steel pipe piles are evenly arranged in the middle of the micro pile reinforcing structure body at intervals. First steel pipe piles are further arranged on the two sides of the micro pile reinforcing structure body respectively, and a gravel cushion layer and a concrete cushion table are sequentially arranged above the first steel pipe piles and the second steel pipe piles, so that the first steel pipe piles and the second steel pipe piles form a stable integrated structure through the concrete cushion table. According to the micro pile reinforcing structure for the soft foundation of the tunnel portal, the micro piles penetrate through the soft foundation layer and are driven into the bedrock, natural soil is reinforced through the replacement effect of the pile bodies, the compaction effect and the cementation effect of the piles on the soil and the adjusting effect of the mattress layer, and the tunnel structure is supported by the bedrock with good bearing capacity and stability on the lower portion. And the safety of the tunnel structure is ensured.
本发明公开了隧道洞口软弱地基微型桩加固结构，包括微型桩加固结构主体和隧道仰拱，所述隧道仰拱下方设有地基层，且地基层下方设有基岩，所述微型桩加固结构主体中部均匀间隔布置有第二钢管桩，且微型桩加固结构主体两侧还分别布置有第一钢管桩，并且第一钢管桩和第二钢管桩上方依次设有碎石垫层和混凝土垫台，使第一钢管桩和第二钢管桩通过混凝土垫台构成稳固的一体结构。该隧道洞口软弱地基微型桩加固结构将微型桩穿过软弱地基层打入基岩中，通过桩体的置换作用、桩对土体的挤密作用、胶结作用以及褥垫层的调节作用来实现对天然土体的加固，并由下部承载力及稳定性较好的基岩支撑隧道结构，保证隧道结构的安全性。
Tunnel portal soft foundation micro pile reinforcing structure
The invention discloses a tunnel portal soft foundation micro pile reinforcing structure which comprises a micro pile reinforcing structure body and a tunnel inverted arch, a foundation layer is arranged below the tunnel inverted arch, bed rock is arranged below the foundation layer, and second steel pipe piles are evenly arranged in the middle of the micro pile reinforcing structure body at intervals. First steel pipe piles are further arranged on the two sides of the micro pile reinforcing structure body respectively, and a gravel cushion layer and a concrete cushion table are sequentially arranged above the first steel pipe piles and the second steel pipe piles, so that the first steel pipe piles and the second steel pipe piles form a stable integrated structure through the concrete cushion table. According to the micro pile reinforcing structure for the soft foundation of the tunnel portal, the micro piles penetrate through the soft foundation layer and are driven into the bedrock, natural soil is reinforced through the replacement effect of the pile bodies, the compaction effect and the cementation effect of the piles on the soil and the adjusting effect of the mattress layer, and the tunnel structure is supported by the bedrock with good bearing capacity and stability on the lower portion. And the safety of the tunnel structure is ensured.
本发明公开了隧道洞口软弱地基微型桩加固结构，包括微型桩加固结构主体和隧道仰拱，所述隧道仰拱下方设有地基层，且地基层下方设有基岩，所述微型桩加固结构主体中部均匀间隔布置有第二钢管桩，且微型桩加固结构主体两侧还分别布置有第一钢管桩，并且第一钢管桩和第二钢管桩上方依次设有碎石垫层和混凝土垫台，使第一钢管桩和第二钢管桩通过混凝土垫台构成稳固的一体结构。该隧道洞口软弱地基微型桩加固结构将微型桩穿过软弱地基层打入基岩中，通过桩体的置换作用、桩对土体的挤密作用、胶结作用以及褥垫层的调节作用来实现对天然土体的加固，并由下部承载力及稳定性较好的基岩支撑隧道结构，保证隧道结构的安全性。
Tunnel portal soft foundation micro pile reinforcing structure
隧道洞口软弱地基微型桩加固结构
HUANG XIANBIN (author) / HUANG BINHUA (author) / QIN QIFENG (author) / LIANG YAOLEI (author) / ZENG NONGJIAN (author) / WEI WEN (author) / YANG YAOSONG (author) / LI XIONG (author) / LIU QI (author) / YUAN LONG (author)
2024-02-27
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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