A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Municipal bridge bearing platform structure for protecting existing subway tunnel and construction method thereof
The invention discloses a municipal bridge bearing platform structure for protecting an existing subway tunnel. The structure comprises a bearing platform and pile foundations, wherein tops of the pile foundations extend into the bearing platform, single-hole clamping piece anchors and fixed end extrusion anchors are arranged at tensioning ends on the periphery of a side surface of the bearing platform, positioning supports are arranged on reinforcement cage main reinforcements of the bearing platform, retard-bonded prestressed reinforcements penetrate through the positioning supports, and twoends of the retard-bonded prestressed reinforcements are anchored and formed through the single-hole clamping piece anchors and the fixed end extrusion anchors respectively. The novel bearing platform structure is simple in structure and convenient to operate, the novel bearing platform structure is provided for combination of municipal bridges and tunnels and subways, that under the same path, the two projects have feasibility is guaranteed, and tunnel operation cannot be limited by implementation of bridge projects.
本发明公开一种保护既有地铁隧道的市政桥梁承台结构，包括承台和桩基，所述桩基顶部伸入至承台内部，所述承台侧面四周的张拉端设有单孔夹片锚和固定端挤压锚，所述承台的钢筋笼主筋上设有定位支架，缓粘结预应力钢筋穿过所述定位支架，所述缓粘结预应力钢筋的两端分别经单孔夹片锚和固定端挤压锚锚固成型。本发明的结构简单，操作方便，为市政桥梁和隧道地铁结合提供新承台结构，确保在同一路径下，两个工程具备可实施性，且不会因其中桥梁工程的实施而限制隧道的运营。
Municipal bridge bearing platform structure for protecting existing subway tunnel and construction method thereof
The invention discloses a municipal bridge bearing platform structure for protecting an existing subway tunnel. The structure comprises a bearing platform and pile foundations, wherein tops of the pile foundations extend into the bearing platform, single-hole clamping piece anchors and fixed end extrusion anchors are arranged at tensioning ends on the periphery of a side surface of the bearing platform, positioning supports are arranged on reinforcement cage main reinforcements of the bearing platform, retard-bonded prestressed reinforcements penetrate through the positioning supports, and twoends of the retard-bonded prestressed reinforcements are anchored and formed through the single-hole clamping piece anchors and the fixed end extrusion anchors respectively. The novel bearing platform structure is simple in structure and convenient to operate, the novel bearing platform structure is provided for combination of municipal bridges and tunnels and subways, that under the same path, the two projects have feasibility is guaranteed, and tunnel operation cannot be limited by implementation of bridge projects.
本发明公开一种保护既有地铁隧道的市政桥梁承台结构，包括承台和桩基，所述桩基顶部伸入至承台内部，所述承台侧面四周的张拉端设有单孔夹片锚和固定端挤压锚，所述承台的钢筋笼主筋上设有定位支架，缓粘结预应力钢筋穿过所述定位支架，所述缓粘结预应力钢筋的两端分别经单孔夹片锚和固定端挤压锚锚固成型。本发明的结构简单，操作方便，为市政桥梁和隧道地铁结合提供新承台结构，确保在同一路径下，两个工程具备可实施性，且不会因其中桥梁工程的实施而限制隧道的运营。
Municipal bridge bearing platform structure for protecting existing subway tunnel and construction method thereof
一种保护既有地铁隧道的市政桥梁承台结构及其施工方法
ZHANG MINJIANG (author) / YUAN QIHUA (author) / CHANG LIJUN (author) / ZHANG JING (author) / LI QIANG (author) / FAN XUE (author) / SHAN KE (author)
2020-07-14
Patent
Electronic Resource
Chinese
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