CN103774550B - The box steel pier of embedded power consumption coverboard - Google Patents
The box steel pier of embedded power consumption coverboard Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 128
- 239000010959 steel Substances 0.000 title claims abstract description 128
- 230000003014 reinforcing effect Effects 0.000 claims description 35
- 238000005192 partition Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 7
- 230000002787 reinforcement Effects 0.000 abstract description 7
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 description 5
- 230000008439 repair process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000003351 stiffener Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
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- 238000009826 distribution Methods 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
本发明公开一种内嵌耗能壳板的箱形钢桥墩,包括箱形钢桥墩本体和横隔板,该箱形钢桥墩本体的下部内具有根部隔室,还包括有焊固在箱形钢桥墩本体的下端端部上的底板,根部隔室内的四角处分别设有耗能壳板,耗能壳板为低屈服点钢板,低屈服点钢板的屈服强度为100MPa、160MPa或225MPa,耗能壳板的上端与横隔板焊固、下端与底板焊固、两侧分别与箱形钢桥墩本体的相应两侧壁焊固在一起,横隔板上开设有通孔。本发明的有益效果是:内嵌的耗能壳板受压时向外屈曲变形,但受到桥墩侧壁限制,使得耗能壳板受压屈曲荷载接近于全截面塑性屈服荷载,可显著提高箱形钢桥墩的耗能能力,并实现震后箱形钢桥墩的快速损伤检测及加固补强,施工快捷和施工工期短。
The invention discloses a box-shaped steel bridge pier embedded with an energy-dissipating shell plate, which comprises a box-shaped steel bridge pier body and a transverse diaphragm. The bottom plate on the lower end of the steel pier body, and the four corners of the root compartment are respectively equipped with energy-dissipating shell plates. The energy-dissipating shell plates are steel plates with low yield points. The upper end of the energy shell plate is welded to the transverse diaphragm, the lower end is welded to the bottom plate, and both sides are welded to the corresponding side walls of the box-shaped steel pier body, and a through hole is opened on the transverse diaphragm. The beneficial effect of the present invention is that: the embedded energy-dissipating shell plate buckles and deforms outwards when under pressure, but is limited by the side wall of the pier, so that the compressive buckling load of the energy-dissipating shell plate is close to the plastic yield load of the full section, which can significantly improve the capacity of the tank. The energy dissipation capacity of the box-shaped steel pier is realized, and the rapid damage detection and reinforcement of the box-shaped steel pier after the earthquake are realized, and the construction is quick and the construction period is short.
Description
技术领域technical field
本发明涉及钢桥墩技术领域,特别涉及一种箱形钢桥墩。The invention relates to the technical field of steel bridge piers, in particular to a box-shaped steel bridge piers.
背景技术Background technique
近20年的地震灾害经验表明,随着城市现代化的发展,交通网络在整个城市生命线抗震防灾系统中越来越重要。而桥梁作为交通网络上一个重要的环节,在震后救援或者灾后重建工作中都扮演者极其重要的角色。历次的地震灾害都表明,桥梁一旦遭到破坏,会严重阻碍整个灾后救援工作的进行,同时也会衍生出更大的次生灾害,造成更大的生命财产损失,因此桥墩应具有足够的强度、稳定性以及抗震性能,才能保证桥梁的安全性、耐久性和正常使用。The experience of earthquake disasters in the past 20 years shows that with the development of urban modernization, the transportation network is becoming more and more important in the entire urban lifeline earthquake and disaster prevention system. As an important link in the transportation network, bridges play an extremely important role in post-earthquake rescue or post-disaster reconstruction work. Previous earthquake disasters have shown that once the bridge is damaged, it will seriously hinder the entire post-disaster rescue work, and at the same time, it will generate greater secondary disasters and cause greater loss of life and property. Therefore, the bridge piers should have sufficient strength , stability and seismic performance, in order to ensure the safety, durability and normal use of the bridge.
传统的钢筋混凝土桥墩由于自重大,延性差,材质不均匀等缺点导致其抗震性能较差,在地震中极易发生破坏,且其震后损伤检测鉴定及加固处理较为困难。为了提高桥墩的抗震性能,已开始采用普通钢材制作的钢桥墩作为桥梁的下部支撑结构,与传统的钢筋混凝土桥墩相比,钢桥墩不仅具有良好的抗震性能和强度,还具有自重轻、占地面积小、现场施工快捷、震后可快速修复补强等显著优点,在发达国家城市高架桥、高速公路桥梁以及人行天桥等领域得到了广泛的应用;同时,在探索新的桥墩结构形式过程中,箱形钢桥墩在两个主轴方向均有较好的抗弯性能,且比圆钢管桥墩加工制作简便,在实际工程中应用更为普遍。Traditional reinforced concrete bridge piers have poor seismic performance due to the shortcomings of heavy weight, poor ductility, and uneven material. In order to improve the seismic performance of bridge piers, steel piers made of ordinary steel have been used as the lower support structure of bridges. Compared with traditional reinforced concrete piers, steel piers not only have good seismic performance and strength, but also have light weight and occupy a lot of land. Small area, quick on-site construction, rapid repair and reinforcement after earthquakes, etc., have been widely used in urban viaducts, expressway bridges, and pedestrian bridges in developed countries; at the same time, in the process of exploring new pier structures, Box-shaped steel piers have better bending resistance in the two main axis directions, and are easier to manufacture than round steel pipe piers, so they are more commonly used in practical engineering.
但是,因箱形钢桥墩的壁厚较薄,在地震中箱形钢桥墩的根部壁板易发生局部屈曲变形,且箱形钢桥墩的应力易集中在各角部焊缝处,造成箱形钢桥墩各角部易撕裂,致使箱形钢桥墩的抗震性能急剧恶化。However, due to the thin wall thickness of the box-shaped steel pier, the root wall of the box-shaped steel pier is prone to local buckling deformation during earthquakes, and the stress of the box-shaped steel pier is easy to concentrate at the corner welds, resulting in box-shaped steel piers. The corners of steel piers are easily torn, which leads to a sharp deterioration in the seismic performance of box-shaped steel piers.
为了防止钢桥墩根部的变形,国家知识产权局在2010年11月24日公开了公开号为101892627A的一种环保型钢桥墩减震结构形式,其由根部隔室、横隔板、纵向加劲肋、横向加劲肋、低弹模混凝土五个部分组成,纵向加劲肋、横向加劲肋交错焊接在根部隔室内,并使用低弹模混凝土填充根部隔室,横隔板用以密封低弹模混凝土表面;此种做法的钢桥墩,虽可使钢桥墩的根部不易发生变形,但低弹模混凝土的填充一方面会增加钢桥墩的自重,进而增加桥墩基础处理费用,使钢桥墩的建设费用较高,另一方面给地震后钢桥墩的损伤检测及加固补强带来困难,使钢桥墩现场施工快捷、震后可快速修复补强等突出优点受到极大限制。In order to prevent the deformation of the root of the steel pier, the State Intellectual Property Office disclosed on November 24, 2010 an environment-friendly steel pier damping structure with a publication number of 101892627A, which consists of root compartments, transverse diaphragms, longitudinal stiffeners, The transverse stiffeners and low elastic modulus concrete are composed of five parts. The longitudinal stiffeners and transverse stiffeners are staggeredly welded in the root compartment, and the root compartment is filled with low elastic modulus concrete. The diaphragm is used to seal the surface of the low elastic modulus concrete; Although the steel pier with this method can make the root of the steel pier difficult to deform, on the one hand, the filling of low elastic modulus concrete will increase the self-weight of the steel pier, which in turn will increase the cost of foundation treatment of the pier, making the construction cost of the steel pier higher. On the other hand, it brings difficulties to the damage detection and reinforcement of steel bridge piers after the earthquake, which greatly limits the outstanding advantages of steel bridge piers such as quick on-site construction and rapid repair and reinforcement after earthquakes.
有鉴于此,本申请人对现有箱形钢桥墩的缺陷进行深入研究,本案由此产生。In view of this, the applicant conducted in-depth research on the defects of the existing box-shaped steel bridge piers, and this case arose from it.
发明内容Contents of the invention
本发明的目的是提供一种内嵌耗能壳板的箱形钢桥墩,其可改善箱形钢桥墩的延性和耗能能力,具有抗震性能好,现场施工快捷,便于震后损伤检测及快速修复的优点。The object of the present invention is to provide a box-shaped steel bridge pier embedded with energy-dissipating shell plates, which can improve the ductility and energy-dissipating capacity of the box-shaped steel bridge pier, has good seismic performance, quick on-site construction, and is convenient for post-earthquake damage detection and rapid recovery. Pros of Restoration.
本发明的技术方案是这样的:一种内嵌耗能壳板的箱形钢桥墩,包括箱形钢桥墩本体和横隔板,该箱形钢桥墩本体的下部内具有根部隔室,该横隔板焊固在箱形钢桥墩本体的下部内;还包括有底板,上述底板盖设于上述箱形钢桥墩本体的下端端部外,并与上述箱形钢桥墩本体焊固在一起,上述箱形钢桥墩本体位于上述横隔板与上述底板之间的空间为所述的根部隔室,上述根部隔室内的四角处分别设有沿上述根部隔室的高度方向延伸的耗能壳板,上述耗能壳板为低屈服点钢板,上述低屈服点钢板的屈服强度为100MPa、160MPa或225MPa,上述低屈服点钢板为其凹口朝内设置的弧形低屈服点钢壳板,上述耗能壳板的上端与上述横隔板焊固在一起,上述耗能壳板的下端与上述底板焊固在一起,上述耗能壳板的两侧分别与上述箱形钢桥墩本体的相应两侧壁焊固在一起,上述横隔板上开设有通至上述根部腔室内的通孔。The technical solution of the present invention is as follows: a box-shaped steel pier embedded with an energy-dissipating shell plate, including a box-shaped steel pier body and a transverse diaphragm, the lower part of the box-shaped steel pier body has a root compartment, and the transverse The partition plate is welded and fixed in the lower part of the box-shaped steel pier body; it also includes a bottom plate, the bottom plate is covered outside the lower end of the box-shaped steel pier body, and is welded together with the box-shaped steel pier body. The space between the box-shaped steel pier body located between the above-mentioned transverse diaphragm and the above-mentioned bottom plate is the root compartment, and the four corners of the above-mentioned root compartment are respectively provided with energy-dissipating shell plates extending along the height direction of the above-mentioned root compartment, The above-mentioned energy-dissipating shell plate is a steel plate with a low yield point, and the yield strength of the above-mentioned low-yield point steel plate is 100MPa, 160MPa or 225MPa. The upper end of the energy shell plate is welded to the above-mentioned transverse diaphragm, the lower end of the above-mentioned energy-dissipating shell plate is welded to the above-mentioned bottom plate, and the two sides of the above-mentioned energy-dissipating shell plate are respectively connected to the corresponding two sides of the box-shaped steel pier body The walls are welded together, and the above-mentioned diaphragm is provided with a through hole leading to the above-mentioned root chamber.
上述根部隔室的高度是上述箱形钢桥墩本体的横截面面积的1.0~1.5倍。The height of the root compartment is 1.0-1.5 times the cross-sectional area of the box-shaped steel pier body.
上述根部隔室的内侧壁设有若干条沿上述根部隔室的高度方向延伸的加强肋条,上述加强肋条为普通钢加强肋条,上述加强肋条焊固在上述根部隔室上,上述加强肋条的上端端部与上述横隔板之间和上述加强肋条的下端端部与上述底板之间均具有一其距离为10mm~20mm的间距。The inner side wall of the above-mentioned root compartment is provided with several reinforcing ribs extending along the height direction of the above-mentioned root compartment. The above-mentioned reinforcing ribs are ordinary steel reinforcing ribs. There is a distance of 10 mm to 20 mm between the end portion and the above-mentioned transverse partition and between the lower end of the above-mentioned reinforcing rib and the above-mentioned bottom plate.
上述加强肋条设置有四条,且上述根部隔室位于两上述耗能壳板之间的中间部位处均具有一上述加强肋条。There are four reinforcing ribs, and each of the root compartments is located in the middle between the two energy-dissipating shell plates.
上述加强肋条设置有八条,上述根部隔室位于两上述耗能壳板之间的部位处均具有二条上述加强肋条,且该二加强肋条均匀间隔分布于两耗能壳板之间。There are eight reinforcing ribs, and the root compartment has two reinforcing ribs at the position between the two energy-dissipating shell plates, and the two reinforcing ribs are evenly spaced between the two energy-dissipating shell plates.
上述加强肋条设置有二条,二加强肋条相对设置。There are two reinforcing ribs above, and the two reinforcing ribs are arranged opposite to each other.
上述底板的外径大于上述箱形钢桥墩本体的外径,且上述底板位于上述箱形钢桥墩本体外的部位处开设有若干个锚栓孔,各上述锚栓孔沿上述底板的周向方向间隔环绕分布设置。The outer diameter of the above-mentioned bottom plate is larger than the outer diameter of the above-mentioned box-shaped steel pier body, and the above-mentioned bottom plate is located outside the above-mentioned box-shaped steel pier body. The interval surrounds the distribution settings.
本发明的内嵌耗能壳板的箱形钢桥墩,由于根部隔室内的四角处均有与根部隔室焊固在一起的弧形低屈服点钢壳板,低屈服点钢具有屈服强度低、屈服应变小、强度稳定和变形力强的力学特性,这样,根部隔室内的四弧形低屈服点钢壳板可作为箱形钢桥墩根部的主要屈服耗能部位,且利用低屈服点钢壳板的弧形特点,使各低屈服点钢板一旦受压时才能够向外屈曲变形,且向外屈曲变形时会受到箱形钢桥墩的侧壁限制,使得弧形低屈服点钢壳板受压屈曲荷载接近于弧形低屈服点钢壳板的全截面塑性屈服荷载,从而使箱形钢桥墩的耗能能力较强,抗震性能优良,且各低屈服点钢板的设置不会造成震后箱形钢桥墩的损伤检测及加固补强造成限制和影响,并可有效地减缓箱形钢桥墩角部焊缝应力集中,以防止箱形钢桥墩的角部焊缝发生撕裂;同时,耗能壳板、横隔板和底板均可在工厂内加工制作,现场仅需吊装焊固即可,具有施工工期短、施工快捷的优点,可大幅度缩短交通管制时间,大大加快地震或突发事故后桥梁的修复速度。The box-shaped steel pier with embedded energy-dissipating shell plates of the present invention has arc-shaped low-yield-point steel shell plates welded together with the root compartment at the four corners of the root compartment, and the low-yield-point steel has low yield strength. , small yield strain, stable strength and strong deformation force. In this way, the four-arc low-yield-point steel shell plate in the root compartment can be used as the main yield energy-dissipating part of the root of the box-shaped steel pier, and the low-yield point steel The arc-shaped characteristics of the shell plate make it possible for each low-yield point steel plate to buckle outward once it is compressed, and the outward buckling deformation will be restricted by the side wall of the box-shaped steel pier, so that the arc-shaped low-yield point steel shell plate The compressive buckling load is close to the full-section plastic yield load of the arc-shaped low-yield point steel shell plate, so that the box-shaped steel pier has a strong energy dissipation capacity and excellent seismic performance, and the setting of each low-yield point steel plate will not cause vibration. The damage detection and reinforcement of the rear box-shaped steel pier have limitations and influences, and can effectively reduce the stress concentration of the corner welds of the box-shaped steel pier to prevent tearing of the corner welds of the box-shaped steel pier; at the same time, The energy-dissipating shell, transverse partition and bottom plate can all be processed and manufactured in the factory, and only need to be hoisted and welded on site. It has the advantages of short construction period and fast construction, which can greatly shorten the traffic control time and greatly speed up the earthquake or sudden disaster. The repair speed of the bridge after the accident.
附图说明Description of drawings
图1为本发明的结构示意图;Fig. 1 is a structural representation of the present invention;
图2为本发明的横截面示意图;Fig. 2 is a schematic cross-sectional view of the present invention;
图3为本发明中底板的结构示意图;Fig. 3 is a schematic structural view of the bottom plate of the present invention;
图4为本发明另一结构的横截面示意图;Fig. 4 is a schematic cross-sectional view of another structure of the present invention;
图5为本发明再一结构的横截面示意图。Fig. 5 is a schematic cross-sectional view of still another structure of the present invention.
图中:In the picture:
箱形钢桥墩本体1根部隔室11Box-shaped steel pier body 1 root compartment 11
横隔板2中心通孔21Diaphragm 2 central through hole 21
底板3锚栓孔31Bottom plate 3 anchor hole 31
耗能壳板4加强肋条5Energy dissipation shell plate 4 reinforcement rib 5
基础100base 100
具体实施方式detailed description
本发明的内嵌耗能壳板的箱形钢桥墩,如图1-3所示,包括箱形钢桥墩本体1、横隔板2和底板3,该箱形钢桥墩本体1的下部内具有根部隔室11,此根部隔室11的高度是箱形钢桥墩本体的横截面面积的1.0~1.5倍,该横隔板2焊固在箱形钢桥墩本体1的下部内,该横隔板2的中间部位开设有与根部隔室11相通的中心通孔21,该底板3盖设于箱形钢桥墩本体1的下端端部外,并与箱形钢桥墩本体1焊固在一起,箱形钢桥墩本体1位于横隔板2与底板3之间的空间为所述的根部隔室11,该根部隔室11内的四角处分别设有沿根部隔室11的高度方向延伸的耗能壳板4,此耗能壳板4为低屈服点钢板,低屈服点钢板的屈服强度为100MPa、160MPa或225MPa,该低屈服点钢板为其凹口朝内设置的弧形低屈服点钢壳板,且耗能壳板4的上端与横隔板2焊固在一起,耗能壳板4的下端与底板3焊固在一起,耗能壳板4的两侧分别与箱形钢桥墩本体1的相应两侧壁焊固在一起。本发明的内嵌耗能壳板的箱形钢桥墩,经多次测试,只有当耗能壳板为其凹口朝内设置的弧形低屈服点钢壳板时才能够实现耗能壳板受压后会向外屈曲变形。The box-shaped steel pier with embedded energy-dissipating shell plate of the present invention, as shown in Figure 1-3, includes a box-shaped steel pier body 1, a transverse diaphragm 2 and a bottom plate 3, and the lower part of the box-shaped steel pier body 1 has Root compartment 11, the height of the root compartment 11 is 1.0 to 1.5 times the cross-sectional area of the box-shaped steel pier body, the transverse diaphragm 2 is welded and fixed in the lower part of the box-shaped steel pier body 1, the transverse diaphragm 2 is provided with a central through hole 21 communicating with the root compartment 11. The bottom plate 3 is covered outside the lower end of the box-shaped steel pier body 1, and is welded together with the box-shaped steel pier body 1. The space between the shaped steel pier body 1 located between the transverse diaphragm 2 and the bottom plate 3 is the root compartment 11, and the four corners of the root compartment 11 are respectively provided with energy dissipation devices extending along the height direction of the root compartment 11. Shell plate 4, the energy-dissipating shell plate 4 is a low yield point steel plate, the yield strength of the low yield point steel plate is 100MPa, 160MPa or 225MPa, and the low yield point steel plate is an arc-shaped low yield point steel shell with its notch facing inward plate, and the upper end of the energy-dissipating shell plate 4 is welded together with the diaphragm 2, the lower end of the energy-dissipating shell plate 4 is welded together with the bottom plate 3, and the two sides of the energy-dissipating shell plate 4 are respectively connected to the box-shaped steel pier body The corresponding two side walls of 1 are welded together. The box-shaped steel bridge pier embedded with the energy-dissipating shell plate of the present invention can realize the energy-dissipating shell plate only when the energy-dissipating shell plate is an arc-shaped low-yield-point steel shell plate with its notch facing inward. After being compressed, it will buckle outward and deform.
本发明的内嵌耗能壳板的箱形钢桥墩,安装时,首先,将横隔板2焊接在箱形钢桥墩本体1内,再将四耗能壳板4分别内切于箱形钢桥墩本体1的角部处,并使四耗能壳板4的上端依次焊接在横隔板2的相应位置上;其次,焊接耗能壳板4两侧与箱形钢桥墩本体1的两内侧壁间的竖向焊缝;再次,底板3与箱形钢桥墩本体1的底部焊接成整体;最后,通过箱形钢桥墩本体1的预留检修孔和横隔板2的中心通孔21进入根部隔室11内,把四耗能壳板4的下端分别焊接在底板3的相应位置上,这样即可完成本发明的箱形钢桥墩下部结构的安装。由于耗能壳板4、横隔板2、底板3以及箱形钢桥墩本体1间焊缝数量较多,焊接时应采用跳焊方式施焊。When installing the box-shaped steel pier with embedded energy-dissipating shell plates of the present invention, firstly, the transverse diaphragm 2 is welded in the box-shaped steel pier body 1, and then the four energy-dissipating shell plates 4 are respectively inscribed on the box-shaped steel pier. At the corners of the pier body 1, the upper ends of the four energy-dissipating shell plates 4 are sequentially welded to the corresponding positions of the diaphragm 2; secondly, the two sides of the energy-dissipating shell plates 4 are welded to the two inner sides of the box-shaped steel pier body 1 The vertical weld between the walls; again, the bottom plate 3 is welded together with the bottom of the box-shaped steel pier body 1; finally, it enters through the reserved inspection hole of the box-shaped steel pier body 1 and the central through hole 21 of the diaphragm 2 In the root compartment 11, the lower ends of the four energy-dissipating shell plates 4 are respectively welded to the corresponding positions of the bottom plate 3, so that the installation of the box-shaped steel pier substructure of the present invention can be completed. Due to the large number of welds between the energy-dissipating shell plate 4, the transverse diaphragm 2, the bottom plate 3, and the box-shaped steel pier body 1, skip welding should be used for welding.
本发明的有益效果如下:The beneficial effects of the present invention are as follows:
一、因低屈服点钢具有屈服强度低、屈服应变小、强度稳定和变形力强的力学特性,而箱形钢桥墩本体的四角内焊固有由低屈服点钢制成的耗能壳板,这样,根部隔室11内的各耗能壳板可作为箱形钢桥墩根部的主要屈服耗能部位,同时利用低屈服点钢板的向内凹弧形特点,使各低屈服点钢板一旦受压时才可向外屈曲变形,向外屈曲变形时会受到箱形钢桥墩本体1侧壁的限制,使得弧形低屈服点钢壳板受压屈曲荷载接近于弧形低屈服点钢壳板的全截面塑性屈服荷载,从而使箱形钢桥墩的耗能能力较强,提高了箱形钢桥墩的抗震性能;1. Due to the low yield point steel has the mechanical properties of low yield strength, small yield strain, stable strength and strong deformation force, and the internal welding of the four corners of the box-shaped steel pier body inherently uses energy-dissipating shell plates made of low-yield point steel. In this way, each energy-dissipating shell plate in the root compartment 11 can be used as the main yield energy-dissipating part of the root of the box-shaped steel pier. When the outward buckling deformation is performed, it will be restricted by the side wall of the box-shaped steel pier body 1, so that the compressive buckling load of the arc-shaped low-yield point steel shell plate is close to that of the arc-shaped low-yield point steel shell plate The plastic yield load of the full section makes the box-shaped steel pier have a stronger energy dissipation capacity and improves the seismic performance of the box-shaped steel pier;
二、各耗能壳板的设置可提高箱形钢桥墩的抗震性能,并可适当地减小箱形钢桥墩本体壁板的宽厚比,从而可提高箱形钢桥墩本体的延性和耗能能力;2. The setting of each energy-dissipating shell plate can improve the seismic performance of the box-shaped steel pier, and can appropriately reduce the width-to-thickness ratio of the box-shaped steel pier body wall plate, thereby improving the ductility and energy dissipation capacity of the box-shaped steel pier body ;
三、横隔板3的中心通孔31的设置,一方面可降低横隔板3的自重,从而降低箱形钢桥墩的整体自重,另一方面可方便安装人员对耗能壳板的焊接操作及震后耗能壳板的检测及更换;3. The setting of the central through hole 31 of the diaphragm 3, on the one hand, can reduce the self-weight of the diaphragm 3, thereby reducing the overall self-weight of the box-shaped steel pier; and detection and replacement of energy-dissipating shell plates after earthquakes;
四、各耗能壳板4的设置不会造成震后箱形钢桥墩的损伤检测及加固补强受到限制和影响,可实现箱形钢桥墩原有的震后可快速检测评定和迅速修复补强的优点;4. The setting of each energy-dissipating shell plate 4 will not limit and affect the damage detection and reinforcement of the box-shaped steel pier after the earthquake, and can realize the original post-earthquake rapid detection and evaluation and rapid repair of the box-shaped steel pier strong advantage;
五、耗能壳板4、横隔板2和底板3均可在工厂内加工制作,现场仅需吊装并焊固即可,避免传统需浇注混凝土而造成施工工期长、施工缓慢的问题,具有施工工期短、施工快捷、构造简单合理、传力明确等优点,可大幅度缩短交通管制时间,大大加快地震或突发事故后桥梁的修复速度。5. The energy-dissipating shell plate 4, the transverse diaphragm 2 and the bottom plate 3 can all be processed and manufactured in the factory, and only need to be hoisted and welded on site, avoiding the long construction period and slow construction caused by the traditional pouring of concrete. The advantages of short construction period, fast construction, simple and reasonable structure, and clear force transmission can greatly shorten the traffic control time and greatly speed up the repair speed of bridges after earthquakes or sudden accidents.
本发明中,该底板3的外径大于箱形钢桥墩本体1的外径,且底板3位于箱形钢桥墩本体1外的部位处开设有若干个锚栓孔31,各锚栓孔31沿底板3的周向方向间隔环绕分布设置;这样,通过各锚栓孔31可方便箱形钢桥墩本体1与基础100的固定。In the present invention, the outer diameter of the bottom plate 3 is larger than the outer diameter of the box-shaped steel pier body 1, and the bottom plate 3 is provided with several anchor bolt holes 31 at the position outside the box-shaped steel pier body 1, and each anchor bolt hole 31 is along the The bottom plate 3 is distributed around at intervals in the circumferential direction; in this way, the fixing of the box-shaped steel pier body 1 and the foundation 100 can be facilitated through each anchor bolt hole 31 .
本发明的另一改进在于:该根部隔室11的内侧壁设有若干条沿根部隔室11的高度方向延伸的加强肋条5,加强肋条5的上端端部与横隔板2之间和加强肋条5的下端端部与底板3之间均具有一其距离为10mm~20mm的间隙,该加强肋条5为普通钢加强肋条,加强肋条5焊固在根部隔室11上,该加强肋条5设置有四根,四加强肋条分别设于箱形钢桥墩本体1的四侧壁的中间部位处;这样,通过各加强肋条5可加强箱形钢桥墩本体1根部的强度,提高箱形钢桥墩的整体抗震性能,避免箱形钢桥墩本体1根部发生屈曲变形。Another improvement of the present invention is that: the inner side wall of the root compartment 11 is provided with several reinforcing ribs 5 extending along the height direction of the root compartment 11, and the upper end of the reinforcing rib 5 and the diaphragm 2 are connected to each other to strengthen There is a gap between the lower end of the rib 5 and the bottom plate 3 with a distance of 10 mm to 20 mm. The reinforcing rib 5 is a common steel reinforcing rib, and the reinforcing rib 5 is welded on the root compartment 11. The reinforcing rib 5 is set There are four, and four reinforcing ribs are respectively arranged at the middle parts of the four side walls of the box-shaped steel pier body 1; in this way, the strength of the root of the box-shaped steel pier body 1 can be strengthened by each reinforcing rib 5, and the strength of the box-shaped steel pier is improved. The overall seismic performance can avoid buckling deformation at the root of the box-shaped steel pier body.
本发明中,如图4所示,该加强肋条5也可设置8条,且根部隔室11的侧壁位于两耗能壳板4之间的部位处均具有二条该加强肋条5,且二加强肋条均匀间隔分布;如图5所示,该加强肋条5也可只设置2条,且二加强肋条5相对设置。In the present invention, as shown in Figure 4, eight reinforcing ribs 5 can also be provided, and the side wall of the root compartment 11 is located between the two energy-dissipating shell plates 4. There are two reinforcing ribs 5, and the two The reinforcing ribs are evenly spaced; as shown in FIG. 5 , only two reinforcing ribs 5 can be provided, and the two reinforcing ribs 5 are arranged opposite to each other.
本发明中,加强肋条5的设置数量由箱形钢桥墩横截面尺寸和宽厚比来决定,并非局限于本实施例的2条、4条或8条。In the present invention, the number of reinforcing ribs 5 is determined by the cross-sectional size and width-to-thickness ratio of the box-shaped steel pier, and is not limited to 2, 4 or 8 in this embodiment.
上述实施例和图式并非限定本发明的产品形态和式样,任何所属技术领域的普通技术人员对其所做的适当变化或修饰,皆应视为不脱离本发明的专利范畴。The above-mentioned embodiments and drawings do not limit the form and style of the product of the present invention, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.
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