CN108360362A - Assembled simple supported box beam end floor beam constructs - Google Patents
Assembled simple supported box beam end floor beam constructs Download PDFInfo
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- CN108360362A CN108360362A CN201810326003.2A CN201810326003A CN108360362A CN 108360362 A CN108360362 A CN 108360362A CN 201810326003 A CN201810326003 A CN 201810326003A CN 108360362 A CN108360362 A CN 108360362A
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- box girder
- end floor
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- box beam
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- 238000010276 construction Methods 0.000 claims abstract description 15
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 238000009415 formwork Methods 0.000 abstract description 16
- 230000002787 reinforcement Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
本发明涉及一种装配式简支箱梁端横梁构造，包括箱梁，箱梁由上部的顶板、下部的底板和两侧的腹板组成，腹板外侧设置有横向竖直的预制端横梁；箱梁内设置有横向竖直的箱内堵头板。本端横梁方案方便预制箱梁内模脱除，加快施工进度，同时有利于端横梁的浇筑质量，确保后期的受力安全。
The invention relates to an assembled simply supported box girder end beam structure, including a box girder, the box girder is composed of an upper top plate, a lower bottom plate and webs on both sides, and a horizontal and vertical prefabricated end beam is arranged on the outer side of the web; The box girder is provided with horizontal and vertical box inner plug boards. The local beam scheme facilitates the removal of the inner formwork of the prefabricated box girder, speeds up the construction progress, and at the same time facilitates the pouring quality of the end beam to ensure the safety of the force in the later stage.
Description
技术领域technical field
本发明涉及桥梁建设工程技术领域，具体涉及一种装配式简支箱梁端横梁构造。The invention relates to the technical field of bridge construction engineering, in particular to an end beam structure of an assembled simply supported box girder.
背景技术Background technique
装配式简支箱梁是公路桥梁中一种常用桥型，因箱梁抗扭刚度大，整体受力性能好，且施工快捷，工艺简单，正得到越来越多的应用。为了承担梁端扭矩和支座集中反力，需要在梁端设置端横梁。Prefabricated simply supported box girder is a commonly used bridge type in highway bridges. Due to its high torsional rigidity, good overall mechanical performance, quick construction and simple process, it is being used more and more. In order to bear the torque at the beam end and the concentrated reaction force of the support, it is necessary to set an end beam at the beam end.
目前采用的端横梁采用室内外连续的方式，室内室外同时设置端横梁，厚度相同，一般要求与主梁整体预制。存在的问题是：箱形截面为闭口截面型式，箱梁预制时，不仅需要设置外模，室内还需要设置内模，预制梁两端都设有端横梁，混凝土浇筑后形成密闭空间，室内内模无法脱除。施工单位考虑过在箱梁顶板开槽取出模板，施工极为困难，顶板槽口恢复质量较差，影响结构受力。因此需要研究一种施工方便，安全可靠的装配式简支箱梁端横梁构造。The end beams currently used are continuous indoors and outdoors, and the end beams are installed indoors and outdoors at the same time, with the same thickness, and generally require integral prefabrication with the main beam. The existing problem is: the box section is a closed section type. When the box girder is prefabricated, not only the outer formwork needs to be set, but also the inner formwork needs to be set up indoors. Both ends of the prefabricated beam are equipped with end beams. The mold cannot be removed. The construction unit considered taking out the formwork by slotting the roof of the box girder, but the construction was extremely difficult, and the restoration quality of the slot on the roof was poor, which affected the stress of the structure. Therefore, it is necessary to study a convenient, safe and reliable assembled simply supported box girder end beam structure.
发明内容Contents of the invention
本发明的目的是提供一种装配式简支箱梁端横梁构造，克服现有技术的缺陷。The purpose of the present invention is to provide an assembled simply supported box girder end beam structure, which overcomes the defects of the prior art.
本发明所采用的技术方案为：The technical scheme adopted in the present invention is:
装配式简支箱梁端横梁构造，其特征在于：Assembled simply supported box girder end beam structure, characterized in that:
包括箱梁，箱梁由上部的顶板、下部的底板和两侧的腹板组成，腹板外侧设置有横向竖直的预制端横梁；Including the box girder, the box girder is composed of the upper top plate, the lower bottom plate and the webs on both sides, and the lateral and vertical prefabricated end beams are arranged on the outer side of the webs;
箱梁内设置有横向竖直的箱内堵头板。The box girder is provided with horizontal and vertical box inner plug boards.
箱梁的底板自内向外均匀加厚，令箱内自内向外横截面逐渐收缩。The bottom plate of the box girder is evenly thickened from the inside to the outside, so that the cross section of the box gradually shrinks from the inside to the outside.
箱内堵头板外侧的箱梁顶板上设置有用于进行二次浇筑的梁端顶板预留槽口。The box girder top plate outside the plug plate in the box is provided with a reserved notch for the beam end top plate for secondary pouring.
预制端横梁侧面与顶板竖直共面。The sides of the prefabricated end beams are vertically coplanar with the roof.
预制端横梁底面高于底板。The bottom surface of the prefabricated end beam is higher than the base plate.
箱梁和预制端横梁一次整体浇筑成形。The box girder and the prefabricated end beam are integrally casted at one time.
箱内堵头板通过砂浆固定于箱内。The plug plate in the box is fixed in the box by mortar.
本发明具有以下优点：The present invention has the following advantages:
本发明中，端横梁仅设置在箱梁外侧，箱室内不设置预制横梁，仅在箱梁内模脱除后，二次浇筑堵头混凝土。箱梁外侧端横梁与箱梁同时预制，室内不预制端横梁，为空心构造。端横梁上、下缘主筋分别设置在箱梁顶、底板内，不会影响箱梁内模的设置。在箱梁顶板靠近端横梁上缘主筋外侧设置长（横向）80cm，宽（顺桥向）15cm左右的预留槽口，以便浇筑二期混凝土，槽口处顶板纵横向钢筋不得截断。堵头板单独预制，待箱梁内模脱除后，用砂浆将堵头板固定在图2所示位置，并在梁端设置端模后，从梁端顶板预留槽口1处浇筑堵头混凝土。本端横梁方案方便预制箱梁内模脱除，加快施工进度，同时有利于端横梁的浇筑质量，确保后期的受力安全。In the present invention, the end beams are only arranged on the outside of the box girder, no prefabricated beams are set in the box chamber, and the plug concrete is poured for the second time only after the inner formwork of the box girder is removed. The outer end beam of the box girder and the box girder are prefabricated at the same time, and the indoor end beam is not prefabricated, which is a hollow structure. The main ribs on the upper and lower edges of the end beam are respectively set in the top and bottom plate of the box girder, which will not affect the setting of the inner formwork of the box girder. On the top of the box girder near the upper edge of the end beam, set a reserved notch with a length (horizontal) of 80 cm and a width (along the direction of the bridge) of about 15 cm to facilitate the pouring of the second-stage concrete. The vertical and horizontal reinforcement of the roof at the notch must not be cut off. The plug plate is prefabricated separately. After the inner formwork of the box girder is removed, the plug plate is fixed at the position shown in Figure 2 with mortar, and after the end formwork is set at the beam end, the plug is poured from the slot 1 reserved on the top plate of the beam end. head concrete. The local beam scheme facilitates the removal of the inner formwork of the prefabricated box girder, speeds up the construction progress, and at the same time facilitates the pouring quality of the beam at the end, ensuring the stress safety in the later stage.
附图说明Description of drawings
图1为预制箱梁端横梁透视图。Figure 1 is a perspective view of a prefabricated box girder end beam.
图2为预制箱梁端横梁纵向剖面图。Figure 2 is a longitudinal section view of the prefabricated box girder end beam.
图3为预制箱梁端横梁横向剖面图。Figure 3 is a cross-sectional view of the prefabricated box girder end beam.
图中，1-梁端顶板预留槽口；2-箱内堵头板；3-预制端横梁，4-二次浇筑。In the figure, 1-reserved notch on the top plate at the beam end; 2-plug plate inside the box; 3-prefabricated end beam, 4-secondary pouring.
具体实施方式Detailed ways
下面结合具体实施方式对本发明进行详细的说明。The present invention will be described in detail below in combination with specific embodiments.
本发明涉及一种装配式简支箱梁端横梁构造，包括箱梁，箱梁的底板自内向外均匀加厚，令箱内自内向外横截面逐渐收缩。箱梁由上部的顶板、下部的底板和两侧的腹板组成，腹板外侧设置有横向竖直的预制端横梁。箱梁和预制端横梁一次整体浇筑成形。预制端横梁侧面与顶板竖直共面，底面高于底板。The invention relates to an assembled simply supported box girder end beam structure, which comprises a box girder. The bottom plate of the box girder is evenly thickened from the inside to the outside, so that the cross section of the box is gradually shrunk from the inside to the outside. The box girder is composed of an upper top plate, a lower bottom plate and webs on both sides, and horizontal and vertical prefabricated end beams are arranged on the outside of the webs. The box girder and the prefabricated end beam are integrally casted at one time. The side of the prefabricated end beam is vertically coplanar with the top plate, and the bottom surface is higher than the bottom plate.
箱梁内设置有横向竖直的箱内堵头板，箱内堵头板通过砂浆固定于箱内。The box girder is provided with horizontal and vertical box inner plug boards, and the box inner plug boards are fixed in the box by mortar.
箱内堵头板外侧的箱梁顶板上设置有用于进行二次浇筑的梁端顶板预留槽口。The box girder top plate outside the plug plate in the box is provided with a reserved notch for the beam end top plate for secondary pouring.
施工时：During construction:
1）绑扎钢筋，设置好内外模板，预制箱梁及端横梁，在顶板靠近横梁上缘主筋处预留梁端顶板预留槽口1；1) Bind the steel bars, set up the internal and external formwork, prefabricate the box girder and the end beam, and reserve the reserved notch 1 for the top plate at the top plate near the main reinforcement on the upper edge of the beam;
2）预制箱内堵头板2。2) Plug plate 2 in the prefabricated box.
3）拆除外模，从箱梁两端脱除内模。3) Remove the outer mold and remove the inner mold from both ends of the box girder.
4）将箱内堵头板2设置在箱室内，并砂浆封堵缝隙。4) Set the plug plate 2 inside the box in the box room, and seal the gap with mortar.
5）设置梁端端模。5) Set beam end dies.
6）从梁端顶板预留槽口1处浇筑封头混凝土及预留槽口混凝土，注意振捣密实。6) Pour the head concrete and the reserved notch concrete from the reserved notch 1 of the beam end top plate, and pay attention to vibration and compaction.
7）待混凝土达到设计强度后，拆除端模，预制梁施工完毕。7) After the concrete reaches the design strength, the end formwork is removed, and the construction of the precast beam is completed.
本发明中，端横梁仅设置在箱梁外侧，箱室内不设置预制横梁，仅在箱梁内模脱除后，二次浇筑堵头混凝土。箱梁外侧端横梁与箱梁同时预制，室内不预制端横梁，为空心构造。端横梁上、下缘主筋分别设置在箱梁顶、底板内，不会影响箱梁内模的设置。在箱梁顶板靠近端横梁上缘主筋外侧设置长（横向）80cm，宽（顺桥向）15cm左右的预留槽口，以便浇筑二期混凝土，槽口处顶板纵横向钢筋不得截断。堵头板单独预制，待箱梁内模脱除后，用砂浆将堵头板固定，并在梁端设置端模后，从梁端顶板预留槽口1处浇筑堵头混凝土。本端横梁方案方便预制箱梁内模脱除，加快施工进度，同时有利于端横梁的浇筑质量，确保后期的受力安全。In the present invention, the end beams are only arranged on the outside of the box girder, no prefabricated beams are set in the box chamber, and the plug concrete is poured for the second time only after the inner formwork of the box girder is removed. The outer end beam of the box girder and the box girder are prefabricated at the same time, and the indoor end beam is not prefabricated, which is a hollow structure. The main ribs on the upper and lower edges of the end beam are respectively set in the top and bottom plate of the box girder, which will not affect the setting of the inner formwork of the box girder. On the top of the box girder near the upper edge of the end beam, set a reserved notch with a length (horizontal) of 80 cm and a width (along the direction of the bridge) of about 15 cm to facilitate the pouring of the second-stage concrete. The vertical and horizontal reinforcement of the roof at the notch must not be cut off. The plug plate is prefabricated separately. After the inner formwork of the box girder is removed, the plug plate is fixed with mortar, and after the end formwork is set at the beam end, the plug concrete is poured from the reserved notch 1 of the beam end top plate. The local beam scheme facilitates the removal of the inner formwork of the prefabricated box girder, speeds up the construction progress, and at the same time facilitates the pouring quality of the beam at the end, ensuring the stress safety in the later stage.
本发明的内容不限于实施例所列举，本领域普通技术人员通过阅读本发明说明书而对本发明技术方案采取的任何等效的变换，均为本发明的权利要求所涵盖。The content of the present invention is not limited to the examples listed, and any equivalent transformation of the technical solution of the present invention adopted by those of ordinary skill in the art by reading the description of the present invention is covered by the claims of the present invention.
Claims (7)
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| CN201810326003.2A CN108360362A (en) | 2018-04-12 | 2018-04-12 | Assembled simple supported box beam end floor beam constructs |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110205943A (en) * | 2019-06-29 | 2019-09-06 | 中国二十二冶集团有限公司 | The construction method of prefabricated freely-supported small box girder end floor beam |
| CN112554032A (en) * | 2021-01-29 | 2021-03-26 | 广西路建工程集团有限公司 | Equal-inner-section reinforced concrete box girder structure and prefabricating method |
| CN117328333A (en) * | 2023-08-08 | 2024-01-02 | 华设盐城智能制造有限公司 | A kind of prefabricated bridge girder box structure |
| CN118386366A (en) * | 2024-05-23 | 2024-07-26 | 中建三局第三建设工程有限责任公司 | Prefabricated box girder web end template and end capping construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110205943A (en) * | 2019-06-29 | 2019-09-06 | 中国二十二冶集团有限公司 | The construction method of prefabricated freely-supported small box girder end floor beam |
| CN112554032A (en) * | 2021-01-29 | 2021-03-26 | 广西路建工程集团有限公司 | Equal-inner-section reinforced concrete box girder structure and prefabricating method |
| CN117328333A (en) * | 2023-08-08 | 2024-01-02 | 华设盐城智能制造有限公司 | A kind of prefabricated bridge girder box structure |
| CN118386366A (en) * | 2024-05-23 | 2024-07-26 | 中建三局第三建设工程有限责任公司 | Prefabricated box girder web end template and end capping construction method |
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Application publication date: 20180803 |
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