阅读说明：本技术 新型装配式钢-混凝土组合钢板梁 (Novel assembled steel-concrete combined steel plate beam ) 是由 黄生富 陆元春 陈龙 胡方健 孔璞 于 2021-08-20 设计创作，主要内容包括：本发明公开了一种新型装配式钢-混凝土组合钢板梁,至少包括一个由两个工字形梁与面板组成的“π”形梁,所述“π”形梁的端部外包有横梁,在所述“π”形梁的底端设置有支座,所述“π”形梁之间形成的面板湿接缝及横梁湿接缝内分别设置有结构受力筋。本发明采用“π”形梁的简支结构体系,简化墩顶处施工,避免墩顶处桥面板受拉开裂的问题,提高结构耐久性；两个工字形梁和一个面板设计为“π”形梁,且设置两个支座,解决安装过程中的稳定问题；摒弃了现有技术中跨中钢横梁及钢梁腹板中的横向加劲,大幅简化构造,景观效果好,易于养护且工作量小。(The invention discloses a novel assembly type steel-concrete combined steel plate beam, which at least comprises a pi-shaped beam consisting of two I-shaped beams and a panel, wherein a cross beam is wrapped outside the end part of the pi-shaped beam, a support is arranged at the bottom end of the pi-shaped beam, and structural stress ribs are respectively arranged in a panel wet joint and a cross beam wet joint formed between the pi-shaped beams. The invention adopts a simple support structure system of the Pi-shaped beam, simplifies the construction at the pier top, avoids the problem that the bridge deck at the pier top is cracked under tension, and improves the structural durability; the two I-shaped beams and the panel are designed as a Pi-shaped beam, and the two supports are arranged, so that the stability problem in the installation process is solved; transverse stiffening in the steel cross beam and the steel beam web in the midspan in the prior art is abandoned, the structure is greatly simplified, the landscape effect is good, maintenance is easy, and the workload is small.)

1. The utility model provides a novel assembled steel-concrete combination steel sheet roof beam which characterized in that: the composite beam comprises at least one Pi-shaped beam consisting of two I-shaped beams (1) and a panel (2), wherein a cross beam (3) is wrapped outside the end part of the Pi-shaped beam, a support (4) is arranged at the bottom end of the Pi-shaped beam, and structural stress ribs are respectively arranged in a panel wet joint (5) and a cross beam wet joint (6) formed between the Pi-shaped beams.

2. The novel assembled steel-concrete combination steel plate beam of claim 1, characterized in that: the I-shaped beam (1) is of a steel structure, and the panel (2) and the cross beam (3) are both of a concrete structure.

3. The novel assembled steel-concrete combination steel plate beam of claim 2, characterized in that: the beam (3) is wrapped outside the I-shaped beam (1).

4. The novel assembled steel-concrete combination steel plate beam of claim 1, characterized in that: the support (4) is arranged at the bottom end of the I-shaped beam (1).

Technical Field

The invention relates to the technical field of bridge structures, in particular to a novel assembly type steel-concrete combined steel plate beam.

Background

The conventional steel-concrete composite plate beam has the following problems:

(1) according to continuous beam design usually, pier top department structure is continuous, need carry out steel bar connection, concrete placement etc. between the adjacent roof beam of striding of pier top department, and the structure and construction are all more complicated, and pier top department hogging moment district concrete decking receives longitudinal tension effect moreover, and easy fracture, the difficult assurance of structural durability.

(2) The erection unit is generally a single T-shaped beam, and because a single end of a single beam is only provided with one support, the stability of the construction process is poor, in order to ensure the stability of the beam body, a structure needs to be additionally arranged during installation, and the construction is complex.

(3) The beam-ends crossbeam generally adopts the steel crossbeam, because be located the expansion joint below, easily receive rainwater erosion, perishable, and difficult maintenance.

(4) Set up multichannel crossbeam in striding, the steel web sets up horizontal stiffening rib, and the structure is numerous and diverse, and the view effect is relatively poor, and later stage maintenance work load is also great.

The person skilled in the art is dedicated to solving the above technical drawbacks.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, a technical object of the present invention is to solve the problems mentioned in the above-mentioned background art.

In order to achieve the technical purpose, the invention provides a novel assembly type steel-concrete combined steel plate beam which at least comprises a pi-shaped beam formed by two I-shaped beams and a panel, wherein a cross beam is wrapped outside the end part of the pi-shaped beam, a support is arranged at the bottom end of the pi-shaped beam, and structural stress ribs are respectively arranged in a panel wet joint and a cross beam wet joint formed between the pi-shaped beams.

Preferably, the I-shaped beam is of a steel structure, and the panel and the beam are both of a concrete structure.

Preferably, the cross beam is externally wrapped on the outer part of the I-shaped beam.

Preferably, the support is arranged at the bottom end of the I-shaped beam.

The invention has the beneficial effects that:

due to the structural design, the invention has the following advantages:

1. the simple support structure system of the 'pi' -shaped beam is adopted, so that the construction at the pier top is simplified, the problem that the bridge deck at the pier top is pulled to crack is avoided, and the durability of the structure is improved.

2. Two I-shaped beams and one panel are designed into a Pi-shaped beam, and two supports are arranged, so that the stability problem in the installation process is solved.

3. Through the arrangement of the beam with the concrete structure, the end part of the I-shaped beam is wrapped by the beam, so that the phenomenon that the I-shaped beam part of the steel structure is prone to corrosion due to the alternation of dry and wet at the wet joint of the panel and the wet joint of the beam is avoided.

4. The number of the Pi-shaped beams can be randomly set to adapt to bridge decks with various widths.

5. Transverse stiffening in the steel cross beam and the steel beam web in the midspan in the prior art is abandoned, the structure is greatly simplified, the landscape effect is good, maintenance is easy, and the workload is small.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line B-B in FIG. 1;

FIG. 4 is a schematic view of the structure of a single "pi" beam of the present invention;

fig. 5 is a schematic structural view of a pedestal portion in the present invention.

In the figure: 1I-shaped beam, 2 panels, 3 beams, 4 supports, 5 panel wet joints and 6 beam wet joints.

Detailed Description

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Example (b):

as shown in figures 1-5, the novel assembly type steel-concrete combined steel plate beam comprises at least one 'pi' shaped beam consisting of two I-shaped beams 1 and a panel 2, a cross beam 3 is wrapped outside the end part of the 'pi' shaped beam, a support 4 is arranged at the bottom end of the 'pi' shaped beam, structural stress ribs are respectively arranged in a panel wet joint 5 and a cross beam wet joint 6 which are formed between the 'pi' shaped beams, and the panel wet joint 5 and the cross beam wet joint 6 are cast in situ after the 'pi' shaped beams are erected in situ.

The I-shaped beam 1 is of a steel structure, and the panel 2 and the cross beam 3 are of a concrete structure.

The cross beam 3 is wrapped outside the I-shaped beam 1.

The support 4 is arranged at the bottom end of the I-shaped beam 1.

The number of the 'pi' beams is determined by the width of the road, and the single 'pi' beam is formed by processing two steel structural I-beams 1 and a concrete structural panel 2 in a processing field and connecting and arranging the I-beams at the bridge position.

The working principle and the construction process of the invention are as follows:

in the using process, a plurality of 'pi' beams are hoisted and placed on a pier or an abutment, and then the panel wet joint 5 and the beam wet joint 6 are poured on site, so that the 'pi' beams form a whole to form a bridge for passing vehicles.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.