CN110258920A - A kind of prefabricated package Honeycomb Beam of holes in soffit - Google Patents
A kind of prefabricated package Honeycomb Beam of holes in soffit Download PDFInfo
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- CN110258920A CN110258920A CN201910316462.7A CN201910316462A CN110258920A CN 110258920 A CN110258920 A CN 110258920A CN 201910316462 A CN201910316462 A CN 201910316462A CN 110258920 A CN110258920 A CN 110258920A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 60
- 239000010959 steel Substances 0.000 claims abstract description 60
- 239000004567 concrete Substances 0.000 claims abstract description 35
- 238000010276 construction Methods 0.000 claims abstract description 17
- 230000002787 reinforcement Effects 0.000 claims description 26
- 239000011178 precast concrete Substances 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009415 formwork Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/08—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
- E04C3/083—Honeycomb girders; Girders with apertured solid web
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
本发明公开了一种腹板开洞的预制包裹蜂窝梁,包括工厂预制成型的钢制骨架和预制混凝土层;钢制骨架是由四根主梁和一根次梁构成的“日”字型骨架,主梁和次梁的腹板上部设有孔洞;预制混凝土层包裹主梁和次梁的下翼缘和孔洞下方的部分腹板。施工时,将预制包裹蜂窝梁运送至施工现场,采用吊装的方式进行现场装配;在相平行主梁和次梁的预制混凝土层上搭放压型钢板,以压型钢板为平台,穿过孔洞布设管线;管线布设完成后,现浇混凝土,形成包裹压型钢板、管线、主梁和次梁的上翼缘和剩余部分腹板的现浇混凝土层。本发明的钢梁被混凝土完全包裹于内部,一方面可提高构件的局部稳定,另一方面缓解了钢梁的防腐以及防火问题。
The invention discloses a prefabricated wrapped honeycomb beam with holes in the web, which comprises a factory prefabricated steel skeleton and a prefabricated concrete layer; the steel skeleton is formed of four main beams and a secondary beam in a "day" shape The skeleton, the upper part of the web of the main beam and the secondary beam is provided with a hole; the prefabricated concrete layer wraps the lower flange of the main beam and the secondary beam and part of the web below the hole. During construction, the prefabricated wrapped honeycomb beams are transported to the construction site, and assembled on site by hoisting; the profiled steel plates are placed on the prefabricated concrete layers of the parallel main beams and secondary beams, and the profiled steel plates are used as platforms to pass through the holes. Layout of pipelines; after pipeline layout is completed, cast-in-place concrete is formed to form a cast-in-place concrete layer covering profiled steel plates, pipelines, upper flanges of main beams and secondary beams and the remaining webs. The steel girder of the present invention is completely wrapped inside by concrete, which can improve the local stability of the component on the one hand, and alleviate the corrosion and fire prevention problems of the steel girder on the other hand.
Description
技术领域technical field
本发明涉及建筑构件技术领域,尤其涉及一种腹板开洞的预制包裹蜂窝梁。The invention relates to the technical field of building components, in particular to a prefabricated wrapped honeycomb beam with holes in the web.
背景技术Background technique
我国每年城乡新建房屋面积20亿立方米,其中80%以上为高能耗建筑,我国单位建筑面积能耗是发达国家的2倍以上。据中国钢协统计,2016年我国钢产量达到8亿吨,自2000年起稳居世界第一,相对应的当前国内建筑工业化程度不到10%,而发达国家钢结构建筑面积占总建筑面积50%以上,日本占到80%。中国作为世界上建筑规模、钢材产量最大的国家,房屋钢结构的发展严重滞后。my country's annual urban and rural housing area is 2 billion cubic meters, of which more than 80% are high-energy buildings, and the energy consumption per unit building area in my country is more than twice that of developed countries. According to the statistics of the China Iron and Steel Association, my country's steel output reached 800 million tons in 2016, ranking first in the world since 2000. Correspondingly, the current domestic construction industrialization level is less than 10%, while the steel structure construction area in developed countries accounts for the total construction area. More than 50%, Japan accounted for 80%. As the country with the largest construction scale and steel output in the world, China lags behind seriously in the development of housing steel structures.
现今我国建筑使用组合梁楼板多采用传统现浇施工方式,位于楼板下方的钢梁为实腹式,自重大,若将腹板开洞,则需进一步考虑其失稳问题,且钢梁易锈蚀,不耐高温,防腐、防火等问题尤为重要;钢梁与楼板需要栓钉相互连接,现场浇灌混凝土楼板需要大量模板,耗费人力、物力;建筑所用管线多在梁板的下方,导致建筑净空降低,占用室内使用空间;在受地震等荷载情况下,支座处楼板即为控制截面,承受负弯矩,钢筋混凝土处于受拉状态,易发生破坏;此外,梁板截面为T形,梁高为钢梁高度h0与楼板厚度L之和,钢梁净高度h0不能作为梁高表示,表述极易混淆。Nowadays, the composite beam floor slabs used in buildings in my country mostly adopt the traditional cast-in-place construction method. The steel beams located under the floor slabs are of solid web type and heavy in weight. High temperature resistance, anti-corrosion, fire prevention and other issues are particularly important; steel beams and floor slabs need to be connected with each other by bolts, and pouring concrete floors on site requires a lot of formwork, which consumes manpower and material resources; most of the pipelines used in construction are below the beams and slabs, resulting in reduced building headroom and occupation of Indoor use space; under loads such as earthquakes, the floor slab at the support is the control section, which bears negative bending moments, and the reinforced concrete is in a state of tension, which is prone to damage; in addition, the beam-slab section is T-shaped, and the beam height is steel The sum of the beam height h0 and the floor thickness L, the steel beam net height h0 cannot be expressed as the beam height, and the expression is easily confused.
发明内容Contents of the invention
针对上述问题中存在的不足之处,本发明提供一种腹板开洞的预制包裹蜂窝梁。In view of the deficiencies in the above problems, the present invention provides a prefabricated wrapped honeycomb beam with holes in the web.
本发明公开了一种腹板开洞的预制包裹蜂窝梁,包括工厂预制成型的钢制骨架和预制混凝土层;The invention discloses a prefabricated wrapped honeycomb beam with holes in the web, which comprises a factory prefabricated steel skeleton and a prefabricated concrete layer;
所述钢制骨架是由四根主梁和一根次梁构成的“日”字型骨架,所述主梁和次梁的腹板上部设有供管线穿过的孔洞;The steel skeleton is a "day"-shaped skeleton composed of four main beams and a secondary beam, and the upper part of the web of the main beam and the secondary beam is provided with holes for pipelines to pass through;
所述预制混凝土层包裹所述主梁和次梁的下翼缘和所述孔洞下方的部分腹板。The precast concrete layer wraps the lower flanges of the main girder and the secondary girder and part of the web below the hole.
作为本发明的进一步改进,施工时,将所述预制包裹蜂窝梁运送至施工现场,采用吊装的方式进行现场装配;在相平行主梁和次梁的预制混凝土层上搭放压型钢板,以所述压型钢板为平台,穿过所述孔洞布设管线;管线布设完成后,现浇混凝土,形成包裹所述压型钢板、管线、所述主梁和次梁的上翼缘和剩余部分腹板的现浇混凝土层。As a further improvement of the present invention, during construction, the prefabricated wrapped honeycomb beams are transported to the construction site, and assembled on site by hoisting; the profiled steel plates are placed on the prefabricated concrete layers of the parallel main beams and secondary beams to The profiled steel plate is a platform, and the pipeline is laid through the hole; after the pipeline is laid, the concrete is cast in place to form the upper flange and the remaining part of the web wrapping the profiled steel plate, the pipeline, the main beam and the secondary beam. The cast-in-place concrete layer of the slab.
作为本发明的进一步改进,以所述压型钢板为平台,布设纵向钢筋;As a further improvement of the present invention, the profiled steel plate is used as a platform to arrange longitudinal reinforcement;
所述纵向钢筋包括上部纵向钢筋和下部纵向钢筋,所述下部纵向钢筋穿过所述主梁和次梁上的所述孔洞,所述上部纵向钢筋从所述主梁和次梁的上翼缘上部通过,所述现浇混凝土层包裹所述上部纵向钢筋和下部纵向钢筋。The longitudinal reinforcement includes an upper longitudinal reinforcement and a lower longitudinal reinforcement, the lower longitudinal reinforcement passes through the holes on the main beam and the secondary beam, and the upper longitudinal reinforcement extends from the upper flanges of the main beam and the secondary beam The upper part passes through, and the cast-in-place concrete layer wraps the upper longitudinal reinforcement and the lower longitudinal reinforcement.
作为本发明的进一步改进,所述预制包裹蜂窝梁、压型钢板、管线、纵向钢筋和现浇混凝土层为整体结构。As a further improvement of the present invention, the prefabricated wrapped honeycomb beams, profiled steel plates, pipelines, longitudinal steel bars and cast-in-place concrete layers are an integral structure.
作为本发明的进一步改进,所述主梁和所述次梁上的孔洞呈圆形。As a further improvement of the present invention, the holes on the main beam and the secondary beam are circular.
作为本发明的进一步改进,所述主梁和所述次梁上的孔洞呈矩形。As a further improvement of the present invention, the holes on the main beam and the secondary beam are rectangular.
作为本发明的进一步改进,所述主梁和主梁之间、所述主梁和次梁之间均以焊接的方式连接固定。As a further improvement of the present invention, the main beam and the main beam, and the main beam and the secondary beam are all connected and fixed by welding.
与现有技术相比,本发明的有益效果为:Compared with prior art, the beneficial effect of the present invention is:
本发明将钢梁(主梁或次梁)腹板切割,形成多个矩形或圆形孔洞,不仅减轻自重,而且建筑所用管线(水、暖、电管等)可从孔洞穿过,舍弃了吊顶内走管线的传统方式,做到管线不外露,达到室内规整美观的效果,并且使房间内部净高增加,从而增大了使用空间;The invention cuts the web of the steel beam (main beam or secondary beam) to form a plurality of rectangular or circular holes, which not only reduces the self-weight, but also the pipelines (water, heating, electric pipes, etc.) used in the building can pass through the holes, thus discarding the The traditional way of running pipelines in the ceiling keeps the pipelines from being exposed, achieves a regular and beautiful indoor effect, and increases the internal net height of the room, thereby increasing the usable space;
本发明在现场浇筑钢筋混凝土楼板时,将压型钢板搭放在相邻的预制混凝土层上,布管、扎筋后浇灌混凝土,无需支模,形成现浇混凝土层;施工完成后,钢制骨架被混凝土完全包裹于内部,提高了构件的局部稳定,且具有良好的防腐、防火效果;In the present invention, when pouring reinforced concrete floor slabs on site, profiled steel plates are placed on the adjacent prefabricated concrete layer, and the concrete is poured after laying pipes and bars, without formwork support, to form a cast-in-situ concrete layer; after the construction is completed, the steel The skeleton is completely wrapped inside by concrete, which improves the local stability of the component and has good anti-corrosion and fire-proof effects;
传统组合梁楼板梁截面按T形计算,梁高为钢梁高度h0与楼板厚度L之和;与之不同的是,本发明的预制包裹蜂窝梁为梁板整体模块,梁高即为钢梁净高h0,表述较为明确;此外,传统组合梁楼板中楼板处于T形截面上部,钢梁位于楼板下方,在承受荷载的情况下,支座处楼板承受负弯矩,处于受拉状态,而本发明的现浇包裹蜂窝梁的钢梁上部分位于楼板内部,一方面省去梁板栓钉连接,另一方面使得钢梁承受弯矩的中性轴上移,楼板受拉截面面积减小,结构安全性能得到提升。The cross-section of the traditional composite beam floor slab is calculated according to the T shape, and the beam height is the sum of the steel beam height h0 and the floor thickness L; the difference is that the prefabricated honeycomb beam of the present invention is an integral module of the beam slab, and the beam height is the net height of the steel beam h0, the expression is relatively clear; in addition, in the traditional composite beam floor, the floor is at the upper part of the T-shaped section, and the steel beam is located below the floor. The upper part of the cast-in-place covered honeycomb beam steel beam is located inside the floor slab. On the one hand, the beam-slab stud connection is omitted; get promoted.
附图说明Description of drawings
图1是本发明腹板开梯形孔洞的钢梁示意图;Fig. 1 is the steel beam schematic diagram that web plate of the present invention opens trapezoidal hole;
图2是本发明腹板开矩形孔洞的钢梁示意图;Fig. 2 is the steel girder schematic diagram that web plate of the present invention opens rectangular hole;
图3是本发明的预制包裹蜂窝梁钢制骨架示意图;Fig. 3 is a schematic diagram of the prefabricated wrapped honeycomb beam steel skeleton of the present invention;
图4是本发明的预制包裹蜂窝梁示意图;Fig. 4 is the schematic diagram of the prefabricated wrapped honeycomb beam of the present invention;
图5是本发明的搭放压型钢板后预制包裹蜂窝梁示意图;Fig. 5 is the schematic diagram of the prefabricated wrapped honeycomb beam after laying the profiled steel plate of the present invention;
图6是本发明的楼板浇筑完成截面图。Fig. 6 is a cross-sectional view of the pouring of the floor slab of the present invention.
图中:In the picture:
1、腹板;2、上翼缘;3、下翼缘;4、孔洞;5、主梁;6、次梁;7、钢制骨架;8、预制混凝土层;9、压型钢板;10、现浇混凝土层。1. Web plate; 2. Upper flange; 3. Lower flange; 4. Hole; 5. Main beam; 6. Secondary beam; 7. Steel skeleton; 8. Precast concrete layer; 9. Profiled steel plate; 10 , cast-in-place concrete layer.
具体实施方式Detailed ways
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明的一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例,都属于本发明保护的范围。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
在本发明的描述中,需要说明的是,术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。此外,术语“第一”、“第二”、“第三”仅用于描述目的,而不能理解为指示或暗示相对重要性。In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.
在本发明的描述中,还需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.
下面结合附图对本发明做进一步的详细描述:Below in conjunction with accompanying drawing, the present invention is described in further detail:
如图4所示,本发明提供一种腹板开洞的预制包裹蜂窝梁,包括工厂预制成型的钢制骨架7和预制混凝土层8;其中:As shown in Figure 4, the present invention provides a prefabricated wrapped honeycomb girder with a web opening, including a factory prefabricated steel skeleton 7 and a prefabricated concrete layer 8; wherein:
如图3所示,本发明的钢制骨架7包括四根主梁5和一根次梁6,四根主梁5和一根次梁6可焊接固定构成的如图3所示的“日”字型骨架,即次梁6与两根短边主梁5平行设置。As shown in Figure 3, the steel framework 7 of the present invention includes four main beams 5 and a secondary beam 6, and the "day" shown in Figure 3 can be welded and fixed by four main beams 5 and a secondary beam 6. " font skeleton, that is, the secondary beam 6 is arranged in parallel with the two short-side main beams 5.
如图1、2所示,本发明的主梁5或次梁6为工字梁结构,其包括腹板1、上翼缘2、下翼缘3和开设在腹板1上部的孔洞4;孔洞4为在腹板1上切割形成的。As shown in Figures 1 and 2, the main girder 5 or the secondary girder 6 of the present invention is an I-beam structure, which includes a web 1, an upper flange 2, a lower flange 3 and a hole 4 provided on the top of the web 1; The hole 4 is formed by cutting on the web 1 .
进一步,孔洞4可呈如图1所示的矩形或如图2所示的圆形,或其他形状。Further, the hole 4 may be rectangular as shown in FIG. 1 or circular as shown in FIG. 2 , or other shapes.
如图4所示,本发明在工厂预制成型时,在上述的钢制骨架7上浇筑混凝土形成预制混凝土层8,预制混凝土层8包裹钢制骨架7(主梁和次梁)的下翼缘和孔洞4下方的部分腹板,孔洞4全部外露或部分外露在外。As shown in Figure 4, when the present invention is prefabricated in the factory, concrete is poured on the above-mentioned steel frame 7 to form a prefabricated concrete layer 8, and the prefabricated concrete layer 8 wraps the lower flange of the steel frame 7 (main beam and secondary beam) And part of the web below the hole 4, the hole 4 is fully exposed or partially exposed.
如图5所示,本发明施工时,将上述图4的预制包裹蜂窝梁运送至施工现场,采用吊装的方式进行现场装配;同时,在相平行主梁和次梁的预制混凝土层上搭放压型钢板9,即如图5所示,在“日”字型骨架的两个“口”字型分骨架上搭放压型钢板9。如图6所示,以压型钢板8为平台,布设管线和纵向钢筋;管线穿过主梁和次梁上的孔洞和压型钢板8的闭口通道,纵向钢筋包括上部纵向钢筋和下部纵向钢筋,下部纵向钢筋穿过主梁和次梁上的孔洞,上部纵向钢筋从主梁和次梁的上翼缘上部通过;管线和纵向钢筋布设完成后,现浇混凝土,形成包裹压型钢板、管线、纵向钢筋、主梁和次梁的上翼缘和剩余部分腹板的现浇混凝土层10;从而将预制包裹蜂窝梁、压型钢板9、管线、纵向钢筋和现浇混凝土层10形成为一整体结构。As shown in Figure 5, during the construction of the present invention, the prefabricated wrapped honeycomb beam of the above-mentioned Figure 4 is transported to the construction site, and the on-site assembly is carried out by hoisting; at the same time, the prefabricated concrete layer of the parallel main beam and the secondary beam is placed Profiled steel plate 9, as shown in Figure 5, puts profiled steel plate 9 on two " mouth " font sub-frames of " day " font skeleton. As shown in Figure 6, the profiled steel plate 8 is used as a platform to lay pipelines and longitudinal reinforcement; the pipeline passes through the holes on the main beam and the secondary beam and the closed channel of the profiled steel plate 8, and the longitudinal reinforcement includes the upper longitudinal reinforcement and the lower longitudinal reinforcement. , the lower longitudinal reinforcement passes through the holes on the main beam and the secondary beam, and the upper longitudinal reinforcement passes through the upper part of the upper flange of the main beam and the secondary beam; after the layout of the pipeline and the longitudinal reinforcement is completed, the concrete is cast in place to form a wrapped profiled steel plate, pipeline , longitudinal reinforcement, the upper flange of the main beam and the secondary beam and the cast-in-place concrete layer 10 of the remaining part of the web; thus the prefabricated wrapped honeycomb beam, the profiled steel plate 9, the pipeline, the longitudinal reinforcement and the cast-in-place concrete layer 10 are formed into one the whole frame.
本发明将钢梁(主梁或次梁)腹板切割,形成多个矩形或圆形孔洞,不仅减轻自重,而且建筑所用管线(水、暖、电管等)可从孔洞穿过,舍弃了吊顶内走管线的传统方式,做到管线不外露,达到室内规整美观的效果,并且使房间内部净高增加,从而增大了使用空间;本发明在现场浇筑钢筋混凝土楼板时,将压型钢板搭放在相邻的预制混凝土层上,布管、扎筋后浇灌混凝土,无需支模,形成现浇混凝土层;施工完成后,钢制骨架被混凝土完全包裹于内部,提高了构件的局部稳定,且具有良好的防腐、防火效果;传统组合梁楼板梁截面按T形计算,梁高为钢梁高度h0与楼板厚度L之和;与之不同的是,本发明的预制包裹蜂窝梁为梁板整体模块,梁高即为钢梁净高h0,表述较为明确;此外,传统组合梁楼板中楼板处于T形截面上部,钢梁位于楼板下方,在承受荷载的情况下,支座处楼板承受负弯矩,处于受拉状态,而本发明的现浇包裹蜂窝梁的钢梁上部分位于楼板内部,一方面省去梁板栓钉连接,另一方面使得钢梁承受弯矩的中性轴上移,楼板受拉截面面积减小,结构安全性能得到提升。The invention cuts the web of the steel beam (main beam or secondary beam) to form a plurality of rectangular or circular holes, which not only reduces the self-weight, but also the pipelines (water, heating, electric pipes, etc.) used in the building can pass through the holes, thus discarding the The traditional way of running pipelines inside the suspended ceiling can prevent the pipelines from being exposed, achieve the effect of regular and beautiful indoors, and increase the internal net height of the room, thereby increasing the use space; Placed on the adjacent prefabricated concrete layer, the concrete is poured after laying pipes and reinforcing bars, without formwork, forming a cast-in-place concrete layer; after the construction is completed, the steel skeleton is completely wrapped inside the concrete, which improves the local stability of the component , and has good anti-corrosion and fire prevention effects; the cross-section of the traditional composite beam floor beam is calculated according to the T shape, and the beam height is the sum of the steel beam height h0 and the floor thickness L; the difference is that the prefabricated wrapped honeycomb beam of the present invention is a beam The overall module of the slab, the beam height is the clear height h0 of the steel girder, and the expression is relatively clear; in addition, in the traditional composite beam slab, the floor is at the upper part of the T-shaped section, and the steel beam is located below the floor. moment, in a tension state, and the upper part of the steel girder of the cast-in-place wrapped honeycomb girder of the present invention is located inside the floor slab. On the one hand, the bolt connection between the beam and the slab is omitted, and on the other hand, the neutral axis of the steel beam that bears the bending moment is moved upward, and the floor slab The tensile cross-sectional area is reduced, and the structural safety performance is improved.
以上仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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