CN109594792A - A kind of displacement-adjustable attachment device and construction method reducing vibration of floor - Google Patents
A kind of displacement-adjustable attachment device and construction method reducing vibration of floor Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 238000006073 displacement reaction Methods 0.000 claims abstract description 20
- 229920001084 poly(chloroprene) Polymers 0.000 claims abstract description 10
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- 238000009408 flooring Methods 0.000 claims 1
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- 230000000694 effects Effects 0.000 abstract description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 2
- 238000007596 consolidation process Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 18
- 238000009776 industrial production Methods 0.000 description 4
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- 238000003466 welding Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0288—Repairing or restoring floor slabs
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Abstract
Description
技术领域technical field
本发明涉及结构加固工程领域，尤其适用于加固已有楼板，提高有动力设备楼层楼面振动的舒适性。The invention relates to the field of structural reinforcement engineering, and is particularly suitable for reinforcing existing floor slabs and improving the comfort of floor vibration of floors with power equipment.
背景技术Background technique
近年来，振动事故频发，结构振动问题越发引起人们的重视。工业生产厂房内常配备大型动力设备，工业生产中振动问题更是屡见不鲜，不仅直接影响了正常的工业生产，同时也对工作人员的身心健康造成了严重的威胁。随着我国建筑业的兴起，工程中的振动所带来的问题也越来越多，其中大型动力设备对工业厂房及周边环境的影响屡见不鲜，其造成的损失更是不言而喻。因工艺生产要求，我国许多工业生产厂房内均配备有大型动力设备，往往因设计疏忽、设备的更新、生产工艺的变更、结构老化等原因，机器设备振动给厂房结构安全带来了诸多不利的影响，轻者造成设备自身无法正常运行及生产，严重的则导致厂房结构的破坏。而且随着多层工业厂房的增多，大型机器布置在楼层上成为了一个不可避免的趋势，具有重要的社会和经济效益。因设备直接布置于结构之上，设备的振动直接导致设备层楼板的振动，若结构楼板自振频率与设备振动频率接近，就会引起楼板的共振，产生振动放大效应，导致结构的破坏。因此，针对有设备层楼面的加固问题成为工程界亟待解决的问题。In recent years, vibration accidents have occurred frequently, and structural vibration problems have attracted more and more attention. Industrial production plants are often equipped with large-scale power equipment, and vibration problems are common in industrial production, which not only directly affects normal industrial production, but also poses a serious threat to the physical and mental health of staff. With the rise of my country's construction industry, there are more and more problems caused by vibration in engineering. The impact of large power equipment on industrial plants and the surrounding environment is not uncommon, and the losses caused by it are self-evident. Due to process production requirements, many industrial production plants in my country are equipped with large-scale power equipment. Often due to negligence in design, equipment update, production process changes, structural aging and other reasons, the vibration of machinery and equipment has brought many disadvantages to the safety of the plant structure. In the light of the impact, the equipment itself cannot operate and produce normally, and in serious cases, it will lead to the damage of the plant structure. And with the increase of multi-storey industrial plants, the arrangement of large machines on floors has become an inevitable trend, which has important social and economic benefits. Because the equipment is directly arranged on the structure, the vibration of the equipment directly leads to the vibration of the equipment floor. If the natural vibration frequency of the structural floor is close to the vibration frequency of the equipment, it will cause the resonance of the floor, resulting in a vibration amplification effect, resulting in the destruction of the structure. Therefore, the reinforcement problem of floors with equipment floors has become an urgent problem to be solved in the engineering field.
目前，常用的加固方法主要有三种：加大结构刚度法、改变传力途径法、粘钢/碳纤维加固法。加大结构刚度法最常见的方法有加大构件截面法，此种方法施工工艺简单，适应性强，但现场湿作业时间长，影响空间利用，且此种方法针对楼板的加固效果不佳；改变传力途径法通常通过增设支撑来实现，此种方法能有效的降低构件的应力，减少构件变形，但此种方法受限于已有结构的布置形式，施工难度较高；粘钢/碳纤维加固法施工工艺简便，但仅适用于承受静力作用且处于正常湿度环境中的构件的加固。在楼板下新增次梁的方法可以有效提高结构刚度，减轻楼板振动，但是如何使两者能够共同工作，一同承担上部结构传来的荷载，是该种加固方法的关键所在。因此，发明一种使已有楼板与加固梁之间能够协同工作的可调位移连接装置显得非常必要。At present, there are three commonly used reinforcement methods: increasing the structural stiffness method, changing the force transmission method, and bonding steel/carbon fiber reinforcement method. The most common method of increasing the structural stiffness is the method of increasing the section of the component. This method has a simple construction process and strong adaptability, but the on-site wet operation time is long, which affects the space utilization, and this method has poor reinforcement effect on the floor; The method of changing the force transmission path is usually realized by adding supports. This method can effectively reduce the stress of the components and reduce the deformation of the components, but this method is limited by the layout of the existing structure, and the construction is difficult; stick steel/carbon fiber The reinforcement method has a simple construction process, but it is only suitable for the reinforcement of components subjected to static force and in a normal humidity environment. The method of adding secondary beams under the floor can effectively improve the structural rigidity and reduce the vibration of the floor, but how to make the two work together and bear the load from the upper structure together is the key to this reinforcement method. Therefore, it is very necessary to invent an adjustable displacement connecting device that can cooperate with the existing floor slab and the reinforcing beam.
发明内容SUMMARY OF THE INVENTION
针对上述技术问题，本发明提供一种使已有楼板与加固梁之间能够协同工作的可调位移连接装置及相应的施工方法。In view of the above technical problems, the present invention provides an adjustable displacement connecting device and a corresponding construction method that enable the existing floor slab and the reinforcing beam to work together.
本发明是一种可减少楼板振动的可调位移连接装置及施工方法，可减少楼板振动的可调位移连接装置，其结构包括橡胶垫1、钢板垫片2、螺栓3、上螺帽4和下螺帽5；橡胶垫1为氯丁橡胶垫；橡胶垫1与钢板垫片2之间连接紧密，钢板垫片2与螺栓3之间焊接，螺栓3与下螺帽5连接一体，上螺帽4和螺栓3螺栓连接；将螺栓3的下螺帽5焊于加固梁7上缘，旋转上螺帽4来调整已有楼板6与加固梁7之间的竖向位移，顶紧楼板6与加固梁7，并通过螺栓顶部的氯丁橡胶垫1和钢板垫片2分散集中力，传递荷载。The present invention is an adjustable displacement connecting device and a construction method which can reduce the vibration of the floor slab, and the adjustable displacement connecting device which can reduce the vibration of the floor slab. The lower nut 5; the rubber pad 1 is a neoprene pad; the rubber pad 1 and the steel plate washer 2 are tightly connected, the steel plate washer 2 and the bolt 3 are welded, the bolt 3 is connected with the lower nut 5, and the upper screw The cap 4 and the bolt 3 are bolted; the lower nut 5 of the bolt 3 is welded to the upper edge of the reinforcement beam 7, and the upper nut 4 is rotated to adjust the vertical displacement between the existing floor 6 and the reinforcement beam 7, and the floor 6 is tightened. With the reinforcement beam 7, the concentrated force is dispersed and the load is transmitted through the neoprene gasket 1 and the steel plate gasket 2 on the top of the bolt.
本发明的减少楼板振动的可调位移连接装置及施工方法，其步骤为：The adjustable displacement connecting device and construction method for reducing floor vibration of the present invention, the steps are:
(1)已有梁8穿孔：根据计算确定已有梁8的开孔个数及位置并进行穿孔；(1) Perforation of the existing beam 8: Determine the number and position of the opening of the existing beam 8 according to the calculation and carry out the perforation;
(2)端板9开孔：根据已确定的已有梁8的开孔位置及个数，设计端板9大小，对端板9相应的进行开孔工作，确保已有梁8开孔位置与端板9螺栓孔11位置相一致；(2) Opening of the end plate 9: According to the determined opening position and number of the existing beams 8, design the size of the end plate 9, and carry out the corresponding opening work on the end plate 9 to ensure the opening position of the existing beam 8. Consistent with the position of the bolt hole 11 of the end plate 9;
(3)已有梁8与端板9连接：通过4～6个加长螺栓10将两块端板9紧密连接在已有梁8两侧；(3) The existing beam 8 is connected with the end plate 9: the two end plates 9 are tightly connected on both sides of the existing beam 8 through 4 to 6 extension bolts 10;
(4)放置连接装置并焊接：根据上部荷载大小计算所需连接装置个数，将整个连接装置置于加固梁7上缘，下螺帽5与加固梁7上缘进行焊接；(4) Place the connection device and weld: Calculate the number of required connection devices according to the upper load size, place the entire connection device on the upper edge of the reinforcement beam 7, and weld the lower nut 5 with the upper edge of the reinforcement beam 7;
(5)连接加固梁7：将加固梁7通过焊缝12焊于两侧端板9上面；(5) Connect the reinforcement beam 7: Weld the reinforcement beam 7 on the end plates 9 on both sides through the welding seam 12;
(6)调节上螺帽4：依次调节各个连接装置的上螺帽4来调整楼板6与加固梁7之间的竖向位移，顶紧楼板6与加固梁7，使得楼板6与加固梁7位移协调，共同工作。(6) Adjust the upper nut 4: adjust the upper nut 4 of each connection device in turn to adjust the vertical displacement between the floor 6 and the reinforcement beam 7, and tighten the floor 6 and the reinforcement beam 7, so that the floor 6 and the reinforcement beam 7 Displacement coordination, working together.
本发明的有益效果：本发明构造简单，造价低廉，利用旋转螺帽来调节楼板与加固梁之间的间距，顶紧楼板与加固梁，使两者能够协同工作，共同承担上部结构传递的动力荷载，并通过螺栓顶部的氯丁橡胶垫和钢板垫片分散集中力，提高加固效果。Beneficial effects of the present invention: the present invention is simple in structure and low in cost, uses a rotating nut to adjust the distance between the floor slab and the reinforcing beam, and tightens the floor slab and the reinforcing beam, so that the two can work together and jointly undertake the power transmitted by the upper structure. load, and disperse the concentrated force through the neoprene gasket and steel plate gasket on the top of the bolt to improve the reinforcement effect.
附图说明Description of drawings
图1是连接装置置于整体结构中时本发明整体示意图；图2是连接装置自身整体示意图；图3是连接装置置于加固梁与楼板之间的断面图；图4是端板示意图。附图标记及对应名称为：橡胶垫1、钢板垫片2、螺栓3、上螺帽4、下螺帽5、楼板6、加固梁7、已有梁8、端板9、加长螺栓10、螺栓孔11、焊缝12。Fig. 1 is the overall schematic diagram of the present invention when the connecting device is placed in the overall structure; Fig. 2 is the overall schematic diagram of the connecting device itself; Fig. 3 is a sectional view of the connecting device being placed between a reinforcing beam and a floor slab; The reference signs and corresponding names are: rubber pad 1, steel plate gasket 2, bolt 3, upper nut 4, lower nut 5, floor plate 6, reinforcement beam 7, existing beam 8, end plate 9, extension bolt 10, Bolt hole 11, weld 12.
具体实施方式Detailed ways
下面结合附图和具体实例对本发明特征作更进一步的描述，所举实例只用于解释本发明，并非用于限制本发明的范围。在本发明原则内，所做的修改、等同替换和改进都属于本发明的保护范围。The features of the present invention will be further described below in conjunction with the accompanying drawings and specific examples. The examples are only used to explain the present invention, and are not intended to limit the scope of the present invention. Within the principles of the present invention, the modifications, equivalent replacements and improvements made all belong to the protection scope of the present invention.
如图1-3所示，本发明是一种可减少楼板振动的可调位移连接装置，其结构包括橡胶垫1、钢板垫片2、螺栓3、上螺帽4和下螺帽5；橡胶垫1为氯丁橡胶垫；橡胶垫1与钢板垫片2之间连接紧密，钢板垫片2与螺栓3之间焊接，螺栓3与下螺帽5连接一体，上螺帽4和螺栓3螺栓连接；将螺栓3的下螺帽5焊于加固梁7上缘，旋转上螺帽4来调整已有楼板6与加固梁7之间的竖向位移，顶紧楼板6与加固梁7，并通过螺栓顶部的氯丁橡胶垫1和钢板垫片2分散集中力，传递荷载。As shown in Figures 1-3, the present invention is an adjustable displacement connecting device that can reduce floor vibration. Its structure includes a rubber pad 1, a steel plate washer 2, a bolt 3, an upper nut 4 and a lower nut 5; The pad 1 is a neoprene pad; the rubber pad 1 and the steel plate washer 2 are tightly connected, the steel plate washer 2 and the bolt 3 are welded, the bolt 3 is connected with the lower nut 5, the upper nut 4 and the bolt 3 bolt Connect; the lower nut 5 of the bolt 3 is welded to the upper edge of the reinforcing beam 7, the upper nut 4 is rotated to adjust the vertical displacement between the existing floor 6 and the reinforcing beam 7, and the floor 6 and the reinforcing beam 7 are tightened. The concentrated force is distributed and the load is transmitted through the neoprene gasket 1 and the steel plate gasket 2 on the top of the bolt.
如图1～3所示，橡胶垫1为氯丁橡胶垫，其厚度为8～12mm，尺寸为90mm×90mm。As shown in Figs. 1 to 3, the rubber pad 1 is a neoprene rubber pad with a thickness of 8 to 12 mm and a size of 90 mm×90 mm.
如图1～3所示，钢板垫片2的厚度为8～12mm，尺寸为100mm×100mm。As shown in FIGS. 1 to 3 , the thickness of the steel plate spacer 2 is 8 to 12 mm, and the size is 100 mm×100 mm.
如图1～3所示，螺栓3直径为30～50mm，钢板垫片2与螺栓3焊接在一起，保证其能够共同工作。As shown in Figures 1 to 3, the diameter of the bolt 3 is 30 to 50 mm, and the steel plate gasket 2 and the bolt 3 are welded together to ensure that they can work together.
如图1～3所示，上螺帽4和下螺帽5规格与所选螺栓3相配套，下螺帽5与加固梁7上翼缘焊接为一体，保证所述连接装置与楼板6、加固梁7共同工作。As shown in Figures 1 to 3, the specifications of the upper nut 4 and the lower nut 5 are matched with the selected bolts 3, and the lower nut 5 and the upper flange of the reinforcing beam 7 are welded together to ensure that the connecting device is connected to the floor 6, The reinforcement beams 7 work together.
如图4所示，端板9厚度为16～20mm，端板高度依据连接装置总高度和加固梁7总高度综合确定，端板宽度依据加固梁7上下翼缘较大宽度确定。As shown in Figure 4, the thickness of the end plate 9 is 16-20mm, the height of the end plate is determined according to the total height of the connecting device and the total height of the reinforcement beam 7, and the width of the end plate is determined according to the larger width of the upper and lower flanges of the reinforcement beam 7.
如图4所示，螺栓孔11大小为18～22mm，位置均匀布置在已有梁8高度中央。As shown in FIG. 4 , the size of the bolt holes 11 is 18-22 mm, and the positions are evenly arranged in the center of the height of the existing beam 8 .
如图1所示，加长螺栓10直径16～20mm，长度依据已有梁8截面宽度确定，一边为单螺帽，另一边为双螺帽，加强连接。As shown in Figure 1, the diameter of the extension bolt 10 is 16-20mm, and the length is determined according to the section width of the existing beam 8. One side is a single nut, and the other side is a double nut to strengthen the connection.
如图1～3所示，连接装置中部间距在300mm～800mm，与已有梁(8)间距200mm；连接装置个数由下式确定：As shown in Figures 1 to 3, the distance between the middle of the connection device is 300mm to 800mm, and the distance from the existing beam (8) is 200mm; the number of connection devices is determined by the following formula:
式中n——连接装置个数；where n——the number of connecting devices;
k1——动力荷载影响系数，取k1＝1.5～2.0；k 1 ——dynamic load influence coefficient, take k 1 =1.5～2.0;
k2——荷载分布不均匀系数，边跨取1.5～2.0，中间跨取2.0～3.0；k 2 ——the coefficient of uneven load distribution, 1.5 to 2.0 for the side span and 2.0 to 3.0 for the middle span;
k3——挠度不均匀系数，取2.0～3.0；k 3 — deflection unevenness coefficient, to be taken as 2.0 to 3.0;
Rck——上部结构荷载标准值(kN)，为上部楼面恒载加活载；R ck —— standard value of superstructure load (kN), adding live load to the dead load of the upper floor;
A——钢板垫片(2)面积；A——the area of the steel plate gasket (2);
σc——压应力限值。σ c — compressive stress limit.
如图所示，本发明是一种减少楼板振动的可调位移连接装置及施工方法，其步骤为：As shown in the figure, the present invention is an adjustable displacement connecting device and a construction method for reducing the vibration of the floor slab, and the steps are:
(1)已有梁8穿孔：根据计算确定已有梁8的开孔个数及位置并进行穿孔；(1) Perforation of the existing beam 8: Determine the number and position of the opening of the existing beam 8 according to the calculation and carry out the perforation;
(2)端板9开孔：根据已确定的已有梁8的开孔位置及个数，设计端板9大小，对端板9相应的进行开孔工作，确保已有梁8开孔位置与端板9螺栓孔11位置相一致；(2) Opening of the end plate 9: According to the determined opening position and number of the existing beams 8, design the size of the end plate 9, and carry out the corresponding opening work on the end plate 9 to ensure the opening position of the existing beam 8. Consistent with the position of the bolt hole 11 of the end plate 9;
(3)已有梁8与端板9连接：通过4～6个加长螺栓10将两块端板9紧密连接在已有梁8两侧；(3) The existing beam 8 is connected with the end plate 9: the two end plates 9 are tightly connected on both sides of the existing beam 8 through 4 to 6 extension bolts 10;
(4)放置连接装置并焊接：根据上部荷载大小计算所需连接装置个数，将整个连接装置置于加固梁7上缘，下螺帽5与加固梁7上缘进行焊接；(4) Place the connection device and weld: Calculate the number of required connection devices according to the upper load size, place the entire connection device on the upper edge of the reinforcement beam 7, and weld the lower nut 5 with the upper edge of the reinforcement beam 7;
(5)连接加固梁7：将加固梁7通过焊缝12焊于两侧端板9上面；(5) Connect the reinforcement beam 7: Weld the reinforcement beam 7 on the end plates 9 on both sides through the welding seam 12;
(6)调节上螺帽4：依次调节各个连接装置的上螺帽4来调整楼板6与加固梁7之间的竖向位移，顶紧楼板6与加固梁7，使得楼板6与加固梁7位移协调，共同工作。(6) Adjust the upper nut 4: adjust the upper nut 4 of each connection device in turn to adjust the vertical displacement between the floor 6 and the reinforcement beam 7, and tighten the floor 6 and the reinforcement beam 7, so that the floor 6 and the reinforcement beam 7 Displacement coordination, working together.
本发明的工作原理主要为：通过将螺栓3的下螺帽5焊于加固梁7上缘，使得螺栓3与加固梁7连为整体，旋转上螺帽4来调整已有楼板6与加固梁7之间的竖向位移，顶紧楼板6与加固梁7，使得楼板6、连接装置、加固梁7三者共同工作，并通过螺栓顶部的氯丁橡胶垫1和钢板垫片2分散集中力，传递荷载，有效减轻有动力设备层楼板振动，提高舒适度。The working principle of the present invention is mainly as follows: by welding the lower nut 5 of the bolt 3 to the upper edge of the reinforcing beam 7, the bolt 3 and the reinforcing beam 7 are connected as a whole, and rotating the upper nut 4 to adjust the existing floor 6 and the reinforcing beam The vertical displacement between 7, the top of the floor 6 and the reinforcement beam 7, so that the floor 6, the connecting device, and the reinforcement beam 7 work together, and the concentrated force is dispersed through the neoprene gasket 1 and the steel plate gasket 2 on the top of the bolt , transfer the load, effectively reduce the vibration of the power equipment floor, and improve the comfort.
Claims (9)
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Application publication date: 20190409 |