WO2018086270A1 - 一种抗震型组合式桥墩 - Google Patents

一种抗震型组合式桥墩 Download PDF

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Publication number
WO2018086270A1
WO2018086270A1 PCT/CN2017/074682 CN2017074682W WO2018086270A1 WO 2018086270 A1 WO2018086270 A1 WO 2018086270A1 CN 2017074682 W CN2017074682 W CN 2017074682W WO 2018086270 A1 WO2018086270 A1 WO 2018086270A1
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Prior art keywords
pier
corrugated steel
column
steel plate
seismic
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PCT/CN2017/074682
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English (en)
French (fr)
Inventor
姜瑞娟
陈夏春
陈宜言
盖卫明
董桔灿
吴启明
Original Assignee
深圳市市政设计研究院有限公司
深圳市尚智工程技术咨询有限公司
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Publication of WO2018086270A1 publication Critical patent/WO2018086270A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/02—Piers; Abutments ; Protecting same against drifting ice
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • 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
    • E01D2101/268—Composite concrete-metal

Definitions

  • the invention relates to the field of bridge construction, in particular to a steel-concrete composite pier structure with better seismic performance.
  • Reinforced concrete piers are a type of bridge pier commonly used in bridge structures. However, such piers are easily damaged under earthquakes and cause bridge accidents. Bending failure and shear failure are the two main failure modes of reinforced concrete piers under earthquake.
  • the bending failure is due to the insufficient bending stiffness of the piers, mainly occurring in the middle and high piers.
  • the shear failure is due to the insufficient shear stiffness of the piers. It mainly occurs in the middle and low piers. Compared with the ductile fracture with ductility, the shear failure has a certain brittleness, and the bridge accident is often more serious. Therefore, when designing the reinforced concrete bridge pier, the high reinforcement ratio of the middle and low piers should be avoided as much as possible, and the shear strength should be guaranteed. Higher than its bending stiffness.
  • the rigid pier is mainly used to increase the resistance of the pier by increasing the cross-sectional area, increasing the reinforcement ratio or changing to the steel-mixed composite structure.
  • the reinforcement is mainly optimized.
  • the rate and cross-section form improve its shear capacity and shear deformation ability. Because steel has higher strength and better ductility than concrete, some steel piers and CFST composite piers have been applied in practical projects. At present, the cost of such piers is relatively high, which has certain limitations in practical applications. .
  • the present invention provides an anti-vibration type combined pier.
  • the utility model relates to an anti-vibration type combined pier, which comprises a column limb and a corrugated steel plate, and the column limbs are at least two, and the adjacent column limbs are connected by a corrugated steel plate to form a box-shaped pier body, and the wave-shaped direction of the corrugated steel plate is a pier body. Axial.
  • the column limb comprises a reinforced concrete column, and the upper end and the lower end of each column limb are integrally cast, and the two sides of the corrugated steel plate are embedded in the reinforced concrete column.
  • the two sides of the corrugated steel plate are fixed with vertical flange plates, and the flange plates are cast in the reinforced concrete columns.
  • the two sides of the corrugated steel plate are provided with a plurality of holes, and the steel bars in the reinforced concrete column are inserted into the holes and tied.
  • the column limb comprises a steel pipe, the steel pipe is filled with concrete, and the two sides of the corrugated steel plate are welded with the steel pipe.
  • the platform is fixed to the bottom of the pier.
  • the column limbs are two places, which are located on opposite sides of the cross section of the pier body, and the adjacent side edges of the two column limbs are connected by a corrugated steel plate, or the column limbs are four places, and are in the pier The four corners of the body section.
  • the cross section of the pier body is variable in the axial direction.
  • the corrugated form of the corrugated steel sheet includes a trapezoidal shape, a rectangular shape, a triangular shape or a circular arc shape.
  • the corrugated steel sheet is pressed from a flat steel plate.
  • the axial pressure and bending moment are taken by the column limb, the horizontal shearing force is supported by the corrugated steel plate, the bending stability of the column leg is improved, and the overall horizontal shearing performance and deformation capacity of the pier are suitable for the pier design of various heights;
  • the division of the corrugated steel plate and the column limb is clear, which can improve the use efficiency of the material; the hollow body can save the concrete dosage and reduce the structural weight, and has the advantages of convenient construction, energy saving and environmental protection, and good economy.
  • Figure 1 is a perspective view of a first embodiment of the present invention
  • Figure 2 is a perspective view of a second embodiment of the present invention.
  • Figure 3 is a perspective view of a third embodiment of the present invention.
  • Figure 4 is a perspective view of a fourth embodiment of the present invention.
  • Figure 5 is a perspective view showing the first embodiment of the corrugated steel plate and the reinforced concrete column;
  • Figure 6 is a perspective view showing a second embodiment of the corrugated steel plate and the reinforced concrete column;
  • Figure 7 is a side elevational view of the first embodiment of the corrugated steel sheet of the present invention.
  • Figure 8 is a side view of a second embodiment of the corrugated steel sheet of the present invention.
  • Figure 9 is a side view of a third embodiment of the corrugated steel sheet of the present invention.
  • Figure 10 is a side elevational view of a fourth embodiment of a corrugated steel sheet of the present invention.
  • the invention discloses an anti-vibration type combined pier comprising a column 100 and a corrugated steel plate 200, wherein the column 100 is at least two, which serves as a main bearing structure of the pier for axial pressure and bending moment;
  • the adjacent column limbs 100 are integrally connected by the corrugated steel plate 200 to form a box-shaped pier body, and the corrugated steel plate 200 is a wave-folded steel plate which is pressed by a flat steel plate, and the wave-folding direction is the axial direction of the pier, and the corrugated steel plate 200 is used for bearing horizontally.
  • the corrugated steel plate 200 and the column limb 100 are clearly defined, which can improve the use efficiency of the material; in addition, the pier body is hollow, which can save The amount of concrete is used to reduce the weight of the structure, the construction is more convenient, and the cost is lower.
  • the pier further comprises a platform 300 which is a reinforced concrete structure and is arranged at the bottom of the pier body for supporting the pier body.
  • FIG. 1 there is shown a perspective view of a first embodiment of the present invention.
  • the column 100 of the present embodiment includes a steel tube 101.
  • the steel tube 101 is filled with concrete 102 for increasing the strength of the column.
  • the two sides of the corrugated steel sheet 200 are welded integrally with the steel tube 101 to realize the column 100 and the corrugated steel sheet 200. The overall fixation between.
  • the bottom of the steel pipe 101 is connected to the cap 300.
  • FIG. 2 there is shown a perspective view of a second embodiment of the present invention, which is the same as the first embodiment, except that the steel tube 101 in the first embodiment is a circular tube, and the steel tube in this embodiment 101 is a square tube.
  • the steel pipe 101 can be prefabricated by the factory, and the concrete 102 is poured on the construction site, and the corrugated steel plate is welded, and the construction is convenient, which helps to save construction time.
  • the column legs of the present invention can also be reinforced concrete columns, that is, the reinforced concrete structures are directly used to form the column limbs.
  • Fig. 3 there is shown a schematic view of a third embodiment of the present invention.
  • the column legs 100 are four, distributed at the four corners of the cross section of the pier, and the upper end and the lower end of each column 100 are integrally cast, and the corrugated steel plate 200 is fixed adjacent to Between the column legs 100.
  • FIG 4 there is shown a schematic view of a fourth embodiment of the present invention.
  • the column legs are also reinforced concrete columns, the difference being that the column legs 100 are two places and are reinforced concrete thin-walled columns located at the cross section of the pier body.
  • the opposite sides of the two column legs 100 are connected by a corrugated steel plate 200 on opposite sides.
  • the cross section of the pier is variable. As shown, the cross section of the pier gradually increases from top to bottom.
  • the cross-section of the column 100 can be square, rectangular, trapezoidal, circular, etc., and the technical parameters such as the cross-sectional size, the thickness of the steel plate, and the concrete reinforcement ratio are adjusted according to the bearing capacity.
  • the two sides of the corrugated steel plate 200 are embedded in the reinforced concrete column.
  • the corrugated steel plate 200 and the reinforced concrete column are respectively embedded.
  • the two sides of the corrugated steel sheet 200 are welded with vertical flange plates 400, and the flange plates 400 are cast in the reinforced concrete columns, so that the corrugated steel sheets 200 and the reinforced concrete columns can be used. A reliable connection is formed between them.
  • a plurality of holes are reserved on both sides of the corrugated steel plate 200.
  • the reinforcing bars are inserted into the reserved holes and tied and fixed, and the concrete is formed after the concrete is poured. connection.
  • the corrugated steel sheet 200 and the reinforced concrete column can also be joined and fixed by other known techniques.
  • the corrugated steel sheet in the present invention may take various forms. Referring to Figures 7 to 10, a side view of each embodiment of the corrugated steel sheet is shown. As shown, the corrugated form of the corrugated steel sheet may be trapezoidal, rectangular, triangular or circular. arc.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

一种抗震型组合式桥墩，包括柱肢(100)与波形钢板(200)，柱肢(100)至少为两处，相邻柱肢(100)之间通过波形钢板(200)连接为一体以形成箱形的墩身，波形钢板(200)的波折方向为墩身的轴向。通过柱肢(100)承担轴向压力与弯矩，通过波形钢板(200)承受水平剪力，配合提高柱肢(100)的压弯稳定性，以及桥墩整体的水平抗剪性能和形变能力，适合于各种高度的桥墩设计；波形钢板(200)与柱肢(100)分工明确，可以提高材料的使用效率；墩身中空，可以节省混凝土用量，减轻结构自重，具有施工便捷、节能环保、经济性好等优点。

Description

一种抗震型组合式桥墩
技术领域
本发明涉及桥梁建筑领域，尤其是涉及一种具有较好抗震性能的钢-混凝土组合式桥墩结构。
背景技术
钢筋混凝土桥墩是目前桥梁结构普遍采用的一种桥墩形式，然而这种桥墩在地震作用下极易遭受破坏而引发桥梁事故。弯曲破坏和剪切破坏是钢筋混凝土桥墩在地震下的两种主要的破坏形式，其中弯曲破坏是由于桥墩的抗弯刚度不够，主要发生在中高墩；剪切破坏是由于桥墩的抗剪刚度不够，主要发生在中矮墩。相比具有延性的弯曲破坏，剪切破坏具有一定的脆性，往往造成的桥梁事故更为严重，故在设计钢筋混凝土桥墩时，应尽量避免中矮墩的高配筋率，应保证其抗剪强度高于其抗弯刚度。
目前，为了提高桥墩的抗震性能，针对刚性墩，主要是通过增大截面面积、增加配筋率或改用钢混组合结构等方式提高桥墩的抗力；针对柔性墩，主要是通过优化其配筋率和截面形式提高其抗剪承载力和剪切变形能力。由于钢材比混凝土具有更高的强度和更好的延性，于是一些钢桥墩、钢管混凝土组合桥墩开始应用在实际工程中，目前这类桥墩的造价相对较高，在实际应用中具有一定的局限性。
发明内容
为了克服现有技术的不足，本发明提供一种抗震型组合式桥墩。
本发明解决其技术问题所采用的技术方案是：
一种抗震型组合式桥墩，包括柱肢与波形钢板，柱肢至少为两处，相邻柱肢之间通过波形钢板连接为一体以形成箱形的墩身，波形钢板的波折方向为墩身的轴向。
作为上述方案的进一步改进方式，柱肢包括钢筋混凝土柱，各柱肢的上端与下端浇筑为一体，波形钢板的两侧边嵌固在钢筋混凝土柱内。
作为上述方案的进一步改进方式，波形钢板的两侧边各固接有垂直的翼缘板，翼缘板浇筑在钢筋混凝土柱内。
作为上述方案的进一步改进方式，波形钢板的两侧边设有若干的孔，钢筋混凝土柱内的钢筋插接在该孔内，并进行绑扎。
作为上述方案的进一步改进方式，柱肢包括钢管，钢管内灌注有混凝土，波形钢板的两侧边与钢管焊接为一体。
作为上述方案的进一步改进方式，包括固接在墩身底部的承台。
作为上述方案的进一步改进方式，柱肢为两处，位于墩身截面的相对两侧边，该两处柱肢的相邻侧边之间通过波形钢板连接，或者柱肢为四处，并处于墩身截面的四角。
作为上述方案的进一步改进方式，墩身的横截面沿轴向可变。
作为上述方案的进一步改进方式，波形钢板的波折形式包括梯形、矩形、三角形或者圆弧形。
作为上述方案的进一步改进方式，波形钢板由平钢板压制而成。
本发明的有益效果是：
通过柱肢承担轴向压力与弯矩，通过波形钢板承受水平剪力，配合提高柱肢的压弯稳定性，以及桥墩整体的水平抗剪性能和形变能力，适合于各种高度的桥墩设计；波形钢板与柱肢分工明确，可以提高材料的使用效率；墩身中空，可以节省混凝土用量，减轻结构自重，具有施工便捷、节能环保、经济性好等优点。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是本发明第一个实施例的立体示意图；
图2是本发明第二个实施例的立体示意图；
图3是本发明第三个实施例的立体示意图；
图4是本发明第四个实施例的立体示意图；
图5是波形钢板与钢筋混凝土柱嵌固的第一个实施例的立体示意图；
图6是波形钢板与钢筋混凝土柱嵌固的第二个实施例的立体示意图；
图7是本发明波形钢板第一个实施例的侧视图；
图8是本发明波形钢板第二个实施例的侧视图；
图9是本发明波形钢板第三个实施例的侧视图；
图10是本发明波形钢板第四个实施例的侧视图。
具体实施方式
以下将结合实施例和附图对本发明的构思、具体结构及产生的技术效果进行清楚、完整的描述，以充分地理解本发明的目的、方案和效果。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，如无特殊说明，当某一特征被称为“固定”、“连接”在另一个特征，它可以直接固定、连接在另一个特征上，也可以间接地固定、连接在另一个特征上。此外，本发明中所使用的上、下、左、右等描述仅仅是相对于附图中本发明各组成部分的相互位置关系来说的。
此外，除非另有定义，本文所使用的所有的技术和科学术语与本技术领域的技术人员通常理解的含义相同。本文说明书中所使用的术语只是为了描述具体的实施例，而不是为了限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的组合。
本发明公开了一种抗震型组合式桥墩，其包括柱肢100与波形钢板200，其中柱肢100至少为两处，其作为桥墩的主要承载结构，用于承担轴向压力与弯矩；相邻柱肢100之间通过波形钢板200连接为一体以形成箱形的墩身，波形钢板200为由平钢板压制而成的波折钢板，其波折方向为桥墩轴向，波形钢板200用于承受水平剪力，配合提高柱肢的压弯稳定性，以及桥墩整体的水平抗剪性能和形变能力，波形钢板200与柱肢100分工明确，可以提高材料的使用效率；此外，墩身中空，可以节省混凝土用量，减轻结构自重，施工更加便捷，造价更低。
优选的，桥墩还包括有承台300，其为钢筋混凝土结构，设于墩身的底部，用于对墩身起支撑作用。
参照图1，示出了本发明第一个实施例的立体示意图，如图所示，包括四处柱肢100，柱肢100分别处于墩身截面的四角，波形钢板连接在相邻柱肢100之间。本实施例中的柱肢100包括钢管101，钢管101内灌注有混凝土102，用于增加柱肢的强度，波形钢板200的两侧边与钢管101焊接为一体，实现柱肢100与波形钢板200之间的整体固定。
钢管101的底部与承台300连接。
参照图2，示出了本发明第二个实施例的立体示意图，其与第一个实施例的大致结构相同，区别在于第一个实施例中钢管101为圆管，本实施例中的钢管101为方管。
钢管101可工厂预制，在施工现场浇筑混凝土102，及与波形钢板进行焊接，施工便捷，有助于节省施工时间。
除上述的钢管混凝土柱之外，本发明的柱肢还可以采用钢筋混凝土柱，即直接采用钢筋混凝土结构形成柱肢。参照图3，示出了本发明第三个实施例的示意图，柱肢100为四处，分布在墩身截面的四角，各柱肢100的上端与下端浇筑为一体，波形钢板200固定在相邻柱肢100之间。
参照图4，示出了本发明第四个实施例的示意图，本实施例中柱肢同样采用钢筋混凝土柱，其区别在于柱肢100为两处，且为钢筋混凝土薄壁柱，位于墩身截面的相对两侧边，该两处柱肢100的相邻侧边之间通过波形钢板200连接。
本实施例与其它实施例的区别还在于墩身横截面是可变的，如图所示，墩身的横截面由上往下逐渐增大。
上述实施例中，柱肢100的截面均可以为方形、长方形、梯形、圆形等各种形式，其截面大小、钢板厚度、混凝土配筋率等技术参数按照承载力需要进行调整。
对于钢筋混凝土柱形成的柱肢而言，波形钢板200的两侧边嵌固在钢筋混凝土柱内，具体的，参照图5、图6，分别示出了波形钢板200与钢筋混凝土柱嵌固的两种实施例，就图5而言，波形钢板200的两侧边各焊接有垂直的翼缘板400，翼缘板400浇筑在钢筋混凝土柱内，如此便可以在波形钢板200与钢筋混凝土柱之间形成可靠的连接。
就图6而言，波形钢板200的两侧边预留若干的孔，在架设钢筋混凝土柱内的钢筋时，将钢筋插接在预留孔内，并进行绑扎固定，浇筑混凝土后即形成可靠连接。当然，波形钢板200与钢筋混凝土柱还可以采用其它公知的技术进行连接固定。
本发明中的波形钢板可以采用各种形式，参照图7至图10，示出了波形钢板各实施例的侧视图，如图所示，波形钢板的波折形式可以是梯形、矩形、三角形或者圆弧形。
以上是对本发明的较佳实施进行了具体说明，但本发明创造并不限于所述实施例，熟悉本领域的技术人员在不违背本发明精神的前提下还可做出种种的等同变形或替换，这些等同的变形或替换均包含在本申请权利要求所限定的范围内。

Claims (10)

  1. 一种抗震型组合式桥墩，其特征在于，包括柱肢与波形钢板，所述柱肢至少为两处，相邻所述柱肢之间通过所述波形钢板连接为一体以形成箱形的墩身，所述波形钢板的波折方向为所述墩身的轴向。
  2. 根据权利要求1所述的抗震型组合式桥墩，其特征在于，所述柱肢包括钢筋混凝土柱，各柱肢的上端与下端浇筑为一体，所述波形钢板的两侧边嵌固在所述钢筋混凝土柱内。
  3. 根据权利要求2所述的抗震型组合式桥墩，其特征在于，所述波形钢板的两侧边各固接有垂直的翼缘板，所述翼缘板浇筑在所述钢筋混凝土柱内。
  4. 根据权利要求2所述的抗震型组合式桥墩，其特征在于，所述波形钢板的两侧边设有若干的孔，所述钢筋混凝土柱内的钢筋插接在该孔内，并进行绑扎。
  5. 根据权利要求1所述的抗震型组合式桥墩，其特征在于，所述柱肢包括钢管，所述钢管内灌注有混凝土，所述波形钢板的两侧边与所述钢管焊接为一体。
  6. 根据权利要求1所述的抗震型组合式桥墩，其特征在于，包括固接在所述墩身底部的承台。
  7. 根据权利要求1所述的抗震型组合式桥墩，其特征在于，所述柱肢为两处，位于墩身截面的相对两侧边，该两处柱肢的相邻侧边之间通过所述波形钢板连接，或者所述柱肢为四处，并处于墩身截面的四角。
  8. 根据权利要求1所述的抗震型组合式桥墩，其特征在于，所述墩身的横截面沿轴向可变。
  9. 根据权利要求1所述的抗震型组合式桥墩，其特征在于，所述波形钢板的波折形式包括梯形、矩形、三角形或者圆弧形。
  10. 根据权利要求1所述的抗震型组合式桥墩，其特征在于，所述波形钢板由平钢板压制而成。
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