CN204436418U - Lid digs top board structure that is prefabricated in subway station and cast-in-place combination - Google Patents
Lid digs top board structure that is prefabricated in subway station and cast-in-place combination Download PDFInfo
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- CN204436418U CN204436418U CN201520113094.3U CN201520113094U CN204436418U CN 204436418 U CN204436418 U CN 204436418U CN 201520113094 U CN201520113094 U CN 201520113094U CN 204436418 U CN204436418 U CN 204436418U
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- prefabricated
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- 238000005266 casting Methods 0.000 claims abstract 4
- 238000009415 formwork Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 3
- 238000009412 basement excavation Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Road Paving Structures (AREA)
Abstract
Description
技术领域technical field
本实用新型涉及一种盖挖地铁车站中利用预制构件做模板浇筑的车站顶板结构。The utility model relates to a station roof structure which is poured by using prefabricated components as formwork in a cover-dug subway station.
背景技术Background technique
目前,城区繁华地段开挖地铁车站是采用盖挖法由地面向下开挖至顶板深度后，将顶部封闭，恢复临时道路，其余的下部工程在封闭的顶盖下进行施工；但现有的盖挖车站顶板全部采用现浇结构，支模拆模所需时间较长，且施工复杂，严重影响回填时间，长期封闭道路加重了交通拥堵问题。At present, the excavation of subway stations in the bustling urban area is to use the cover-excavation method to excavate from the ground to the depth of the roof, then close the top and restore the temporary road, and the rest of the lower part of the construction is carried out under the closed roof; but the existing The roof of the cover-excavation station is all cast-in-place structure. It takes a long time to set up and remove the formwork, and the construction is complicated, which seriously affects the backfilling time. The long-term road closure has aggravated the traffic congestion problem.
中国专利CN 102926403 A公开了一种盖挖法施工的顶板，其顶板采用先铺垫层然后支模板现浇混凝土结构，混凝土养护完成后需拆除模板及垫层，所需工期太长。Chinese patent CN 102926403 A discloses a top slab constructed by the cover-excavation method. The top slab adopts a cast-in-situ concrete structure with a bedding layer and then supports formwork.
实用新型内容Utility model content
本实用新型的目的是为克服上述现有技术的不足，提供一种利用预制构件做模板现浇的车站顶板结构，顶板采用预制叠合板做模板，无需拆除，节省了支模拆模时间，节约了模板材料；预制叠合板成为结构顶板的一部分，兼做顶板的次梁承受上部荷载。The purpose of this utility model is to overcome the above-mentioned deficiencies in the prior art, and provide a station roof structure using prefabricated components as templates. The formwork material is removed; the prefabricated laminated slab becomes a part of the structural roof, and the secondary beam that doubles as the roof bears the upper load.
为实现上述目的，本实用新型采用下述技术方案：In order to achieve the above object, the utility model adopts the following technical solutions:
一种盖挖地铁车站中预制与现浇结合的顶板结构，包括水平支撑梁，所述水平支撑梁的左右两侧均设有压顶圈梁，所述水平支撑梁上架设有预制叠合板，所述预制叠合板上设有现浇顶板。A prefabricated and cast-in-place roof structure in a cover-excavation subway station, including a horizontal support beam, the left and right sides of the horizontal support beam are provided with top ring beams, and the horizontal support beam is erected with prefabricated laminated slabs. The above-mentioned prefabricated laminated board is provided with a cast-in-place top board.
所述预制叠合板位于两压顶圈梁之间。The prefabricated laminated slab is located between two crimping ring beams.
所述水平支撑梁、预制叠合板和现浇顶板组合起来的高度与压顶圈梁的高度相同。The combined height of the horizontal support beam, the prefabricated laminated plate and the cast-in-place roof plate is the same as the height of the top ring beam.
所述预制叠合板的纵截面形状为多个凸字形连接组成。The longitudinal section shape of the prefabricated laminated board is composed of a plurality of convex-shaped connections.
所述预制叠合板内纵向设有钢筋。The prefabricated laminated slab is longitudinally provided with steel bars.
所述预制叠合板的凸起处预留插筋，所述预留插筋顶端设有弯钩，可拉住上部现浇结构中的主筋，与上部现浇结构中的钢筋绑扎在一起，增加现浇结构与预制叠合板的牢固性。Inserting ribs are reserved at the protrusions of the prefabricated laminated slabs, and the top of the reserved inserting ribs is provided with a hook, which can pull the main bars in the upper cast-in-place structure and bind them together with the steel bars in the upper cast-in-place structure, increasing The firmness of cast-in-place structures and prefabricated laminated slabs.
本实用新型的有益效果为：The beneficial effects of the utility model are:
本实用新型中压顶圈梁与顶板梁是同时浇筑的，稳定性较好，属刚性连接，上方回填土体的压力通过顶板传递给桩，可增加了车站的抗浮能力。The medium-pressure roof ring beam and the roof beam of the utility model are poured at the same time, have good stability, and are rigidly connected. The pressure of the backfilled soil above is transmitted to the piles through the roof, which can increase the floating resistance of the station.
本实用新型的顶板采用预制叠合板做模板，无需拆除，节省了支模拆模时间，大大减少了上方道路的封闭时间。同时节省了模板材料，预制叠合板成为结构顶板的一部分，兼做顶板的次梁承受上部荷载，增加车站顶板的整体性。The roof plate of the utility model adopts the prefabricated laminated board as the formwork, which does not need to be dismantled, saves the time for formwork support and dismantling, and greatly reduces the closing time of the upper road. At the same time, formwork materials are saved, and the prefabricated laminated slab becomes a part of the structural roof, and the secondary beam that doubles as the roof bears the upper load, increasing the integrity of the station roof.
附图说明Description of drawings
图1为本实用新型盖挖地铁车站中预制与现浇结合的顶板结构示意图；Fig. 1 is a schematic diagram of the roof structure combined with prefabrication and cast-in-place in the utility model cover excavation subway station;
图2为本实用新型盖挖地铁车站中预制与现浇结合的顶板结构俯视图；Fig. 2 is the plan view of the roof structure combined with prefabrication and cast-in-place in the utility model cover excavation subway station;
图3为本实用新型顶板结构在盖挖地铁车站中的应用示意图；Fig. 3 is a schematic diagram of the application of the roof structure of the present invention in the subway station covered and dug;
图4为本实用新型顶板结构的预制叠合板的截面图；Fig. 4 is the sectional view of the prefabricated laminated plate of the utility model roof structure;
图5为本实用新型顶板结构的预制叠合板的俯视图；Fig. 5 is the plan view of the prefabricated laminated plate of the utility model roof structure;
图中，1为围护桩；3为立柱桩；4为预制叠合板；5为钢筋；6为预留插筋；7为现浇顶板；8为水平支撑梁；9为止水帷幕；10为压顶圈梁，11为回填土。In the figure, 1 is the enclosure pile; 3 is the column pile; 4 is the prefabricated laminated slab; 5 is the steel bar; 6 is the reserved reinforcement; 7 is the cast-in-place roof; Topping ring beam, 11 is backfill.
具体实施方式Detailed ways
下面结合附图和实施例对本实用新型进一步说明。Below in conjunction with accompanying drawing and embodiment the utility model is further described.
如图1-图2所示，盖挖地铁车站中预制与现浇结合的顶板结构，包括水平支撑梁8，水平支撑梁8的左右两侧均设有压顶圈梁10，水平支撑梁8上两压顶圈梁10之间架设有预制叠合板4，预制叠合板4上设有现浇顶板7。水平支撑梁8、预制叠合板4和现浇顶板7组合起来的高度与压顶圈梁10的高度相同。As shown in Figures 1 and 2, the prefabricated and cast-in-place roof structure in the cover-excavation subway station includes a horizontal support beam 8, and the left and right sides of the horizontal support beam 8 are provided with topping ring beams 10. A prefabricated laminated plate 4 is erected between the two top ring beams 10, and a cast-in-place roof 7 is arranged on the prefabricated laminated plate 4. The combined height of the horizontal support beam 8 , the prefabricated laminated slab 4 and the cast-in-place roof 7 is the same as the height of the top ring beam 10 .
如图3所示，利用本实用新型顶板结构盖挖地铁车站的应用，包括以下步骤：As shown in Figure 3, the application of using the roof structure of the present utility model to dig a subway station includes the following steps:
步骤1.在施工场地利用压桩机将预制围护桩1、立柱桩3压入设计好的位置；Step 1. Use a pile driver to press the prefabricated enclosure pile 1 and column pile 3 into the designed position at the construction site;
a)结合附近车流量规律，在晚上9点至次日早晨7点之间封闭施工段道路，并做好道路指示标志；a) According to the law of traffic flow in the vicinity, the roads in the construction section will be closed between 9:00 p.m.
b)利用压桩机将预制围护桩1压入设计位置，利用中间注浆孔注浆加固桩端地层；b) Use a pile driver to press the prefabricated enclosure pile 1 into the design position, and use the middle grouting hole to grout to reinforce the pile end stratum;
c)在围护桩1外侧打设一圈水泥土搅拌桩作为止水帷幕9，配合降水措施和回灌措施保证基坑降水不引起周边建筑物的沉降等问题；c) Set up a circle of cement-soil mixing piles on the outer side of the retaining pile 1 as the water-stop curtain 9, cooperate with dewatering measures and recharge measures to ensure that the dewatering of the foundation pit does not cause problems such as settlement of surrounding buildings;
d)利用压桩机将预制立柱桩3压入设计位置。d) Use a pile driver to press the prefabricated column pile 3 into the designed position.
步骤2.开挖基坑，浇筑压顶圈梁10、水平支撑8，铺设预制叠合板4，浇筑结构顶板7；Step 2. Excavate the foundation pit, pour the top ring beam 10, the horizontal support 8, lay the prefabricated laminated slab 4, and pour the structural roof 7;
a)全日制封闭道路，做好围挡及道路指示标志；a) Roads are closed on a full-time basis, with fences and road signs;
b)小放坡开挖基坑至围护桩露出桩顶位置；b) Excavate the foundation pit on a small slope to the position where the pile top is exposed;
c)开挖基坑侧面挂网喷浆，防止边坡滑塌，可选择性的采用土钉支护；c) Excavate the side of the foundation pit to hang the net and spray grout to prevent the slope from slumping, and optionally use soil nails for support;
d)在围护桩顶绑扎压顶圈梁10的钢筋，并绑扎水平支撑梁8的钢筋，水平支撑梁8架立在立柱桩3的顶部位置；d) Binding the steel bar of the top ring beam 10 at the top of the enclosure pile, and binding the steel bar of the horizontal support beam 8, and the horizontal support beam 8 stands on the top position of the column pile 3;
e)支设压顶圈梁10和水平支撑梁8模板，浇筑压顶圈梁10和水平支撑梁8；e) support the crown ring beam 10 and the horizontal support beam 8 formwork, and pour the top ring beam 10 and the horizontal support beam 8;
f)在水平支撑梁8上铺设预制叠合板4，板的两端支撑在水平支撑梁8上兼做顶板次梁，水平支撑梁8兼做顶板的主梁；f) Prefabricated laminated slabs 4 are laid on the horizontal support beam 8, the two ends of the slab are supported on the horizontal support beam 8 and also serve as the roof secondary beam, and the horizontal support beam 8 also serves as the main beam of the roof;
g)在预制叠合板4上绑扎顶板钢筋，顶板钢筋与预制叠合板的预留插筋6连接在一起，然后浇筑顶板7，在路两侧预留出土口和进料口；g) Bind the roof steel bars on the prefabricated laminated slab 4, the roof steel bars are connected with the reserved inserting bars 6 of the prefabricated laminated slab, and then the roof 7 is poured, and an excavation port and a feed port are reserved on both sides of the road;
h)养护混凝土至设计强度，铺设防水卷材。h) Curing the concrete to the design strength, and laying waterproof membranes.
步骤3.回填上部土方，恢复正上方道路交通；Step 3. Backfill the upper earthwork and restore the road traffic directly above;
a)做好出土口和进料口的防护，顶板上方回填三合土并压实；a) Do a good job of protecting the excavation port and the feed port, and backfill the composite soil above the roof and compact it;
b)施工路基，铺设道路，恢复交通。b) Construction of roadbed, laying of roads, restoration of traffic.
如图4-图5所示，预制叠合板4的纵截面形状为多个凸字形连接组成。以凸字形板底板为平面，凸字形板凸起部分的长度方向为纵向，预制叠合板4内纵向设有钢筋5。预制叠合板4的凸起处预留插筋6。As shown in Fig. 4-Fig. 5, the longitudinal section shape of the prefabricated laminated board 4 is composed of a plurality of convex-shaped connections. Take the bottom plate of the convex-shaped plate as the plane, the length direction of the raised part of the convex-shaped plate is the longitudinal direction, and the longitudinal direction of the prefabricated laminated plate 4 is provided with steel bars 5 . Insert ribs 6 are reserved at the protrusions of the prefabricated laminated panels 4 .
上述虽然结合附图对本实用新型的具体实施方式进行了描述，但并非对本实用新型保护范围的限制，所属领域技术人员应该明白，在本实用新型的技术方案的基础上，本领域技术人员不需要付出创造性劳动即可做出的各种修改或变形仍在本实用新型的保护范围以内。Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.
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| CN201520113094.3U CN204436418U (en) | 2015-02-16 | 2015-02-16 | Lid digs top board structure that is prefabricated in subway station and cast-in-place combination |
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| CN201520113094.3U CN204436418U (en) | 2015-02-16 | 2015-02-16 | Lid digs top board structure that is prefabricated in subway station and cast-in-place combination |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794281A (en) * | 2020-06-22 | 2020-10-20 | 中铁一局集团有限公司 | A kind of subway cover excavation inversion structure and construction method thereof |
| CN113482147A (en) * | 2021-06-28 | 2021-10-08 | 五冶集团上海有限公司 | Construction method of '0' -layer frame structure |
-
2015
- 2015-02-16 CN CN201520113094.3U patent/CN204436418U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794281A (en) * | 2020-06-22 | 2020-10-20 | 中铁一局集团有限公司 | A kind of subway cover excavation inversion structure and construction method thereof |
| CN113482147A (en) * | 2021-06-28 | 2021-10-08 | 五冶集团上海有限公司 | Construction method of '0' -layer frame structure |
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Granted publication date: 20150701 |