CN108774961A - The production method of prefabricated PC Reactive Powder Concrete acoustic barrier unit board - Google Patents
The production method of prefabricated PC Reactive Powder Concrete acoustic barrier unit board Download PDFInfo
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- CN108774961A CN108774961A CN201810423730.0A CN201810423730A CN108774961A CN 108774961 A CN108774961 A CN 108774961A CN 201810423730 A CN201810423730 A CN 201810423730A CN 108774961 A CN108774961 A CN 108774961A
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- 230000004888 barrier function Effects 0.000 title claims abstract description 52
- 239000004567 concrete Substances 0.000 title claims abstract description 40
- 239000000843 powder Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 127
- 239000010959 steel Substances 0.000 claims abstract description 127
- 239000011490 mineral wool Substances 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 6
- 238000013461 design Methods 0.000 claims abstract description 4
- 238000012423 maintenance Methods 0.000 claims description 7
- 230000000670 limiting effect Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000009417 prefabrication Methods 0.000 claims description 4
- 238000009415 formwork Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0017—Plate-like elements
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0029—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with porous surfaces, e.g. concrete with porous fillers
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
- E01F8/0064—Perforated plate or mesh, e.g. as wall facing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
本发明公开了一种装配式预应力活性粉末混凝土声屏障单元板的制作方法。在铁路沿线间隔设置立柱，立柱为H型钢，并将立柱按设计要求间隔固定在钢筋混凝土底梁上，每相邻两根立柱之间安装声屏障单元板，声屏障单元板包括面板、背板、吸音岩棉、槽钢和工字钢。声屏障单元板的面板和背板由掺入钢纤维活性粉末混凝土浇筑而成，同时采用先张法对面板和背板内的高强钢筋进行张拉。本发明方法将预制好的面板和背板在施工现场与吸音岩棉、工字钢和槽钢等进行拼装并与立柱固定，具有自重较轻、施工简单、运输便利、抗裂性好、使用寿命长等优点。拼装好的单元板形成三层中空声屏障结构，其降噪效果更加理想。
The invention discloses a method for manufacturing an assembled prestressed active powder concrete sound barrier unit plate. Set columns along the railway at intervals, the columns are H-shaped steel, and the columns are fixed on the reinforced concrete bottom beam at intervals according to the design requirements, and the sound barrier unit board is installed between every two adjacent columns, and the sound barrier unit board includes a panel and a back board , sound-absorbing rock wool, channel steel and I-beam. The face plate and back plate of the sound barrier unit plate are poured by mixing steel fiber active powder concrete, and the high-strength steel bars in the face plate and back plate are tensioned by pre-tensioning method. The method of the invention assembles the prefabricated panel and backboard with sound-absorbing rock wool, I-beam and channel steel at the construction site and fixes them with the column, which has the advantages of light weight, simple construction, convenient transportation, good crack resistance, and easy use. Long life and other advantages. The assembled unit boards form a three-layer hollow sound barrier structure, and its noise reduction effect is more ideal.
Description
技术领域technical field
本发明属于铁路声屏障单元板设计技术领域，特别涉及一种装配式预应力活性粉末混凝土声屏障单元板的制作方法。The invention belongs to the technical field of railway sound barrier unit plate design, in particular to a method for manufacturing an assembled prestressed active powder concrete sound barrier unit plate.
背景技术Background technique
声屏障位于噪声源和接受噪声源影响区域之间，可有效吸收噪音，从而使接受者所在区域的噪音值降低到规范要求以下。The sound barrier is located between the noise source and the area affected by the noise source, which can effectively absorb the noise, so that the noise value in the area where the receiver is located is reduced below the specification requirements.
声屏障分为金属声屏障和非金属声屏障，金属声屏障的优点是便于安装、可规模化施工等，但存在造价高、养护要求高等缺点，而非金属声屏障主要以混凝土声屏障为主，具有造价低、耐腐蚀、无污染等优点。非金属声屏障又分为整体式和装配式两种，装配式声屏障具有自重较轻、运输方便、装拆简单、易于更换等优点。Sound barriers are divided into metal sound barriers and non-metal sound barriers. The advantages of metal sound barriers are easy installation and large-scale construction, etc., but there are disadvantages such as high cost and high maintenance requirements, while non-metal sound barriers are mainly concrete sound barriers. , has the advantages of low cost, corrosion resistance and no pollution. Non-metallic sound barriers are divided into two types: integral type and assembled type. Assembled sound barriers have the advantages of light weight, convenient transportation, simple assembly and disassembly, and easy replacement.
铁路声屏障的主要目的是降噪，但在火车循环气动荷载作用下，普通混凝土声屏障单元板容易出现大量裂缝，甚至危及列车的行车安全，尤其是高铁沿线的声屏障单元板，从而降低了混凝土声屏障的使用寿命。活性粉末混凝土与普通混凝土相比，具有高韧性、超高强度、良好的体积稳定性、高温适应性、高耐久性等特点，同时辅以成熟的预应力技术，能够有效增强声屏障单元板的抗裂性、耐久性和使用寿命。因此，采用预应力活性粉末混凝土改善普通混凝土声屏障单元板存在的问题尤为重要。The main purpose of railway sound barriers is to reduce noise, but under the action of train cyclic aerodynamic load, ordinary concrete sound barrier unit plates are prone to a large number of cracks, which even endanger the safety of trains, especially the sound barrier unit plates along high-speed railways, thereby reducing the The service life of concrete sound barriers. Compared with ordinary concrete, reactive powder concrete has the characteristics of high toughness, ultra-high strength, good volume stability, high temperature adaptability, and high durability. Crack resistance, durability and longevity. Therefore, it is particularly important to use prestressed reactive powder concrete to improve the problems existing in ordinary concrete sound barrier unit panels.
发明内容Contents of the invention
本发明的目的是克服普通混凝土声屏障单元板抗裂性能不足、抗疲劳性差、运输比较困难等问题，提供一种装配式预应力活性粉末混凝土声屏障单元板的制作方法。The purpose of the present invention is to overcome the problems of insufficient crack resistance, poor fatigue resistance, and difficult transportation of common concrete sound barrier unit plates, and provide a method for manufacturing an assembled prestressed active powder concrete sound barrier unit plate.
具体步骤为：The specific steps are:
（1）在铁路沿线间隔设置立柱，立柱为H型钢，并将立柱按设计要求间隔固定在钢筋混凝土底梁上，每相邻两根立柱之间安装声屏障单元板，声屏障单元板包括面板、背板、吸音岩棉、槽钢和工字钢。(1) Set columns at intervals along the railway line. The columns are H-shaped steel, and the columns are fixed on the reinforced concrete bottom beam at intervals according to the design requirements. A sound barrier unit plate is installed between every two adjacent columns. The sound barrier unit plate includes panels , back panel, sound-absorbing rock wool, channel steel and I-beam.
（2）声屏障单元板的面板在预制场进行预制：首先，在钢模两端钢板上开比面板中高强钢筋直径稍大的孔洞，孔洞数量与面板中高强钢筋数相同，高强钢筋两端开螺纹，用于与螺帽咬合；其次在钢模底板上平铺带有凸齿的橡胶，进行模板组装，并将钢模内侧及凸齿上涂抹脱模剂；然后将高强钢筋放入到钢模内，高强钢筋通过钢模两端钢板上的孔洞，部分螺纹外露在钢模外，通过测力矩扳手将螺帽拧紧到计算张拉控制应力值，从而实现高强钢筋的张拉，张拉采用一端张拉或两端张拉；最后将搅拌均匀的钢纤维活性粉末混凝土浇筑在钢模内并振捣密实，抹平表面后进行养护，养护完成后进行放张，切断多余的外露高强钢筋，钢模能够重复利用。(2) The panel of the sound barrier unit panel is prefabricated in the prefabrication field: first, holes are opened on the steel plates at both ends of the steel form, which are slightly larger in diameter than the high-strength steel bars in the panel. The number of holes is the same as the number of high-strength steel bars in the panel. Threading is used to engage with the nut; secondly, rubber with protruding teeth is spread on the bottom plate of the steel form to assemble the formwork, and a release agent is applied on the inside of the steel form and on the protruding teeth; then the high-strength steel bars are put into the In the steel mold, the high-strength steel bars pass through the holes on the steel plates at both ends of the steel mold, and part of the threads are exposed outside the steel mold. The nuts are tightened to the calculated tension control stress value with a torque wrench, so as to realize the tension and tension of the high-strength steel bars. Tension at one end or tension at both ends; finally, the uniformly stirred steel fiber reactive powder concrete is poured into the steel mold and compacted, and the surface is smoothed for maintenance. After the maintenance is completed, the tension is performed, and the excess exposed high-strength steel bars are cut , The steel mold can be reused.
（3）声屏障单元板的背板在预制场进行预制：首先，在钢模两端钢板上开比背板中高强钢筋直径稍大的孔洞，孔洞数量与背板中高强钢筋数相同，高强钢筋两端开螺纹，用于与螺帽咬合；其次，进行钢模组装，将钢模内侧涂抹脱模剂；然后，将高强钢筋放入到钢模内，高强钢筋通过钢模两端钢板上的孔洞，部分螺纹外露在钢模外，通过测力矩扳手将螺帽拧紧到计算张拉控制应力值，从而实现高强钢筋的张拉，张拉采用一端张拉或两端张拉；最后将搅拌均匀的钢纤维活性粉末混凝土浇筑在钢模内并振捣密实，抹平表面，养护完成后进行放张，切断多余的外露高强钢筋，钢模能够重复利用。(3) The back plate of the sound barrier unit plate is prefabricated in the prefabrication field: first, holes are opened on the steel plates at both ends of the steel form, which are slightly larger in diameter than the high-strength steel bars in the back plate, and the number of holes is the same as the number of high-strength steel bars in the back plate. The two ends of the steel bar are threaded to engage with the nut; secondly, the steel mold is assembled, and the release agent is applied to the inside of the steel mold; then, the high-strength steel bar is put into the steel mold, and the high-strength steel bar passes through the steel plates at both ends of the steel mold part of the thread is exposed outside the steel mold, and the nut is tightened to the calculated tension control stress value with a torque wrench, so as to realize the tension of the high-strength steel bar. The tension adopts one end tension or two ends tension; The well-mixed steel fiber active powder concrete is poured into the steel mold and vibrated to make it compact, and the surface is smoothed. After the curing is completed, it is stretched, and the excess exposed high-strength steel bars are cut off. The steel mold can be reused.
（4）槽钢和工字钢的加工：将槽钢和工字钢的两端和中间部位各焊接一块垂直于翼缘的小钢板作为限位板，限位板两侧留出面板和背板的厚度，形成6个槽口，以便面板和背板通过，并产生限位作用。(4) Processing of channel steel and I-beam: Weld a small steel plate perpendicular to the flange at the two ends and the middle part of the channel steel and I-beam as the limit plate, leaving the panel and the back on both sides of the limit plate. According to the thickness of the board, 6 notches are formed to facilitate the passage of the panel and the back panel, and produce a limiting effect.
（5）装配式预应力活性粉末混凝土声屏障单元板的组装：将预制好的面板、背板、吸音岩棉、槽钢和工字钢运输到施工现场进行拼装；首先将靠近钢筋混凝土底梁的槽钢通过螺栓固定于相邻两根立柱之间，其中立柱由规格更大的H型钢做成，槽钢和工字钢与立柱互相垂直，在垂直且相交的节点处槽钢或工字钢的翼缘与立柱翼缘贴合面采用螺栓连接固定；然后将背板插入槽钢外侧的槽口中，再将面板插入到槽钢内侧的槽口中；最后，将吸音岩棉填充到背板和面板之间的中空结构中。用工字钢一侧的槽口对已经固定好的面板和背板再次进行固定，并将工字钢和立柱用螺栓进行连接固定，依次进行上述步骤重复拼装，直到最顶层时用槽钢的槽口对面板和背板进行最后固定，并与立柱通过螺栓连接固定，同时也达到封顶的目的，即实现装配式预应力活性粉末混凝土声屏障单元板的制作。(5) Assembly of prefabricated prestressed active powder concrete sound barrier unit panels: transport the prefabricated panels, back panels, sound-absorbing rock wool, channel steel and I-beam to the construction site for assembly; The channel steel is fixed between two adjacent columns by bolts. The column is made of larger H-shaped steel. The channel steel and I-shaped steel are perpendicular to the column. The flange of the steel and the flange of the column are connected and fixed by bolts; then the back panel is inserted into the notch on the outside of the channel steel, and then the panel is inserted into the notch on the inside of the channel steel; finally, the sound-absorbing rock wool is filled into the back panel and in the hollow structure between the panels. Use the notch on the side of the I-beam to fix the fixed panel and back plate again, and connect the I-beam and the column with bolts, and repeat the above steps until the top layer is used. The mouth is finally fixed to the panel and the back panel, and connected to the column by bolts, and also achieves the purpose of capping, that is, to realize the fabrication of prestressed active powder concrete sound barrier unit panels.
本发明的优点：Advantages of the present invention:
装配式施工能够使施工简单化。面板和背板独立施工，使单个构件自重小、便于运输、装卸简单。面板和背板由掺有钢纤维的活性粉末混凝土浇筑而成，具有抗折性好及强度高等特点，改善了单元板的抗裂性能，提高了耐久性和使用寿命，同时可以充分利用高强钢筋的抗拉性能，并循环使用模具等。施加预应力，可有效控制混凝土裂缝的发展，同时也进一步提高了面板和背板的抗裂度。活性粉末混凝土自身的高抗折性及预应力的施加，使得单元板在保证强度和不失稳的前提下，最大化地减小单元板截面厚度，减轻构件自重。Prefabricated construction can simplify construction. The front panel and the back panel are constructed independently, so that the weight of a single component is small, easy to transport, and simple to load and unload. The face plate and the back plate are made of active powder concrete mixed with steel fibers, which has the characteristics of good bending resistance and high strength, which improves the crack resistance of the unit plate, improves the durability and service life, and can make full use of high-strength steel bars The tensile properties, and recycling molds and so on. Applying prestress can effectively control the development of concrete cracks, and further improve the crack resistance of the panel and back panel. The high flexural resistance of reactive powder concrete and the application of prestress enable the unit panel to minimize the section thickness of the unit panel and reduce the self-weight of the component under the premise of ensuring strength and stability.
附图说明Description of drawings
图1为本发明实施例中装配式预应力活性粉末混凝土声屏障单元板的面板正视示意图。Fig. 1 is a schematic front view of a prefabricated prestressed active powder concrete sound barrier unit panel in an embodiment of the present invention.
图2为本发明实施例中装配式预应力活性粉末混凝土声屏障单元板的背板正视示意图。Fig. 2 is a schematic front view of the back plate of the assembled prestressed active powder concrete sound barrier unit plate in the embodiment of the present invention.
图3为本发明实施例中装配式预应力活性粉末混凝土声屏障单元板的侧视示意图。Fig. 3 is a schematic side view of an assembled prestressed active powder concrete sound barrier unit plate in an embodiment of the present invention.
图4为本发明实施例中装配式预应力活性粉末混凝土声屏障单元板拼装后的正视示意图。Fig. 4 is a schematic front view of assembled prestressed active powder concrete sound barrier unit panels in the embodiment of the present invention.
图5为本发明实施例中装配式预应力活性粉末混凝土声屏障单元板拼装后的侧视示意图。Fig. 5 is a schematic side view of the assembled prestressed active powder concrete sound barrier unit plate in the embodiment of the present invention after assembly.
图6为本发明实施例中装配式预应力活性粉末混凝土声屏障单元板的预应力张拉螺母组合示意图。Fig. 6 is a schematic diagram of the combination of prestressed tension nuts of the assembled prestressed active powder concrete sound barrier unit plate in the embodiment of the present invention.
图7为本发明实施例中装配式预应力活性粉末混凝土声屏障单元板的槽钢限位板焊接俯视图。Fig. 7 is a top view of the welded channel steel limiting plate of the assembled prestressed active powder concrete sound barrier unit plate in the embodiment of the present invention.
图8为本发明实施例中装配式预应力活性粉末混凝土声屏障单元板的工字钢与立柱连接固定正面示意图。Fig. 8 is a schematic front view of the connection and fixation of the I-beam and the column of the assembled prestressed active powder concrete sound barrier unit plate in the embodiment of the present invention.
图9为本发明实施例中装配式预应力活性粉末混凝土声屏障单元板的槽钢与立柱连接固定正面示意图。Fig. 9 is a schematic front view of the connection and fixation of the channel steel and the column of the assembled prestressed active powder concrete sound barrier unit plate in the embodiment of the present invention.
图10为本发明实施例中装配式预应力活性粉末混凝土声屏障单元板的槽钢或工字钢与立柱连接固定俯视示意图。Fig. 10 is a top view schematic diagram of the connection and fixation of the channel steel or I-beam and the column of the assembled prestressed active powder concrete sound barrier unit plate in the embodiment of the present invention.
图中标记：1-面板；2-背板；3-立柱；4-槽钢；5-工字钢；6-钢筋混凝土底梁；7-吸音岩棉；8-限位板；9-螺栓；10-高强钢筋；11-钢板；12-螺帽。Marks in the figure: 1-panel; 2-backboard; 3-column; 4-channel steel; 5-I-beam; 6-reinforced concrete bottom beam; 7-sound-absorbing rock wool; ; 10-high-strength steel bar; 11-steel plate; 12-nut.
具体实施方式Detailed ways
实施例：Example:
下面通过具体实例对本发明的具体操作进行描述，本实例的操作仅用于对本发明的进一步说明，但不是对本发明保护范围的限制，而对本领域技术人员作出非本质改变的内容也属于本发明的保护范围。The specific operation of the present invention is described below through specific examples, and the operation of this example is only used for further explanation of the present invention, but is not the restriction to the scope of protection of the present invention, and the content of making unessential changes to those skilled in the art also belongs to the present invention protected range.
结合图1至图10。Combining Figure 1 to Figure 10.
如图所示，声屏障包括铁路沿线设置的立柱，立柱固定在钢筋混凝土底梁上。As shown, the sound barrier consists of uprights set along the railway line and fastened to reinforced concrete bottom beams.
声屏障单元板面板和背板由掺有一定量钢纤维的活性粉末混凝土在钢模中浇筑而成，活性粉末混凝土浇筑前首先在钢模中均匀涂抹一层脱模剂，然后将两端带有螺纹的高强钢丝分别穿过面板和背板刚模两端预留的11个和8个孔洞，两端部分螺纹分别外露在钢模外侧，然后通过测力矩扳手将螺帽拧紧到计算张拉控制应力值，从而实现高强钢丝的张拉。张拉可采用一端张拉也可采用两端张拉。高强钢丝张拉完后进行混凝土浇筑并振捣密实，最后将表面抹平，养护完成后，进行放张，切断多余的钢丝，模具可重复利用，工字钢和槽钢按照所需规格型号外购。The face plate and the back plate of the sound barrier unit plate are poured in the steel mold by the active powder concrete mixed with a certain amount of steel fiber. The threaded high-strength steel wires pass through the 11 and 8 holes reserved at both ends of the panel and back plate rigid molds respectively. Part of the threads at both ends are exposed outside the steel molds, and then the nuts are tightened to the calculated tension control by torque wrench. Stress value, so as to realize the tension of high-strength steel wire. Tensioning can be done at one end or at both ends. After the high-strength steel wire is stretched, concrete is poured and vibrated compactly. Finally, the surface is smoothed. After the maintenance is completed, it is stretched and the excess steel wire is cut off. The mold can be reused. purchase.
面板1养护完成后，将面板1的一侧粘贴等面积的黑毡布，以防止雨水或异物沿孔洞进入单元板内。将最上端槽钢4和以下工字钢5的两端和中间部位各焊接一块垂直于翼缘的小钢板作为限位板8，限位板8两侧留出面板1和背板2的厚度，形成6个槽口，以便面板1和背板2通过，并产生限位作用。After panel 1 maintenance is completed, paste black felt cloth of equal area on one side of panel 1 to prevent rainwater or foreign matter from entering the unit panel along the hole. A small steel plate perpendicular to the flange is welded to the two ends and the middle part of the uppermost channel steel 4 and the lower I-beam 5 as the limiting plate 8, leaving the thickness of the panel 1 and the back plate 2 on both sides of the limiting plate 8 , to form 6 notches, so that the panel 1 and the back panel 2 can pass through, and produce a limiting effect.
将预制好的声屏障单元板面板1（已经粘贴黑毡布）和背板2及吸音岩棉7、槽钢4、工字钢5运输到施工现场进行拼装。首先将靠近钢筋混凝土底梁的槽钢4通过螺栓9固定于立柱3之间，其中立柱3由规格更大的H型钢做成，槽钢4和工字钢5与立柱3互相垂直，在垂直且相交的节点处槽钢4或工字钢5的翼缘与立柱3翼缘贴合面采用螺栓9连接固定；然后将背板2插入槽钢4外侧的槽口中，再将面板1插入到槽钢4内侧的槽口中；最后，将吸音岩棉7填充到背板2和面板1之间的中空结构中。用工字钢5一侧的槽口对已经固定好的面板1和背板2再次进行固定，并将工字钢5和立柱3用螺栓9进行连接固定，依次进行上述步骤重复拼装，直到最顶层时用槽钢4的槽口对面板1和背板2进行最后拼装，并与立柱3通过螺栓9连接固定，同时也达到封顶的目的，即实现装配式预应力活性粉末混凝土声屏障单元板的制作。Transport the prefabricated sound barrier unit panel 1 (black felt cloth has been pasted), back panel 2, sound-absorbing rock wool 7, channel steel 4, and I-beam 5 to the construction site for assembly. First, the channel steel 4 close to the reinforced concrete bottom beam is fixed between the columns 3 through bolts 9, wherein the column 3 is made of H-shaped steel with a larger specification, and the channel steel 4 and the I-beam 5 are perpendicular to the column 3. And the flange of the channel steel 4 or I-beam 5 at the intersecting node is connected and fixed with the flange of the column 3 with bolts 9; then the back plate 2 is inserted into the notch outside the channel steel 4, and the panel 1 is inserted into the In the notch inside the channel steel 4; finally, the sound-absorbing rock wool 7 is filled into the hollow structure between the back plate 2 and the panel 1. Use the notch on one side of the I-beam 5 to fix the fixed panel 1 and back plate 2 again, and connect the I-beam 5 and the column 3 with bolts 9, and repeat the above steps until the top layer The panel 1 and the back panel 2 are finally assembled with the notch of the channel steel 4, and are connected and fixed with the column 3 through the bolt 9, and the purpose of capping is also achieved at the same time, that is, to realize the assembly of the prestressed active powder concrete sound barrier unit panel. make.
本实施例所述的面板和背板是由活性粉末混凝土浇筑而成，具有较高的抗折强度，因此在保证强度的前提下，与普通混凝土声屏障单元板相比，可以减小截面厚度，减轻自重。由于对面板和底板施加了预应力，所以单元板的刚度、强度、抗裂性能及耐久性进一步得到改善，在不失稳的前提下，截面厚度可再次减小，使单元板自重最轻。采用拼装式安装，可以最大限度地简化施工，为规模化生产及运输带来很大便利。The face plate and back plate described in this embodiment are made of active powder concrete, which has high flexural strength, so under the premise of ensuring the strength, compared with the ordinary concrete sound barrier unit plate, the section thickness can be reduced , to reduce the weight. Due to the prestress applied to the face plate and the bottom plate, the rigidity, strength, crack resistance and durability of the unit plate are further improved. Under the premise of not losing stability, the section thickness can be reduced again, so that the unit plate has the lightest weight. The assembled installation can simplify the construction to the greatest extent and bring great convenience to large-scale production and transportation.
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