CN114922170A - Design method for reinforcing wharf pile foundation based on basalt fiber sleeve - Google Patents
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- 229920002748 Basalt fiber Polymers 0.000 title claims abstract description 169
- 238000013461 design Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 22
- 230000002787 reinforcement Effects 0.000 claims abstract description 52
- 239000004568 cement Substances 0.000 claims abstract description 51
- 239000000463 material Substances 0.000 claims abstract description 46
- 238000010276 construction Methods 0.000 claims abstract description 14
- 238000004381 surface treatment Methods 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 239000011440 grout Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000002520 smart material Substances 0.000 claims description 4
- 239000007943 implant Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 6
- 210000003205 muscle Anatomy 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000007788 roughening Methods 0.000 description 6
- 239000004567 concrete Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 206010052904 Musculoskeletal stiffness Diseases 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000013505 freshwater Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 239000003733 fiber-reinforced composite Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
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- 239000003365 glass fiber Substances 0.000 description 1
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
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- E02D5/64—Repairing piles
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B14/46—Rock wool ; Ceramic or silicate fibres
- C04B14/4643—Silicates other than zircon
- C04B14/4656—Al-silicates, e.g. clay
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
Description
技术领域technical field
本申请属于码头桩基加固技术领域,具体而言,涉及到一种基于玄武岩纤维套筒加固码头桩基的设计方法。The present application belongs to the technical field of dock pile foundation reinforcement, and in particular relates to a design method for dock pile foundation reinforcement based on basalt fiber sleeves.
背景技术Background technique
常规的高桩码头桩基修复加固技术有加桩法,现浇混凝土包覆法、玻纤套筒加固法,前两者方法无法解决桩基长期受腐蚀破坏的根本问题,玻纤套筒是有机高分子材料,耐老化能力弱,加固效果寿命不长。采用玄武岩纤维套筒加固法,抗冲磨性强,耐疲劳性能优异,加之纤维本身性能优异性,是一种加固码头桩基的极佳方法。为进一步加强码头桩基结构的力学及耐久性,提出一种基于玄武岩纤维套筒加固码头桩基的设计方法。Conventional high-piled wharf pile foundation repair and reinforcement techniques include pile addition method, cast-in-place concrete cladding method, and glass fiber sleeve reinforcement method. The first two methods cannot solve the fundamental problem of long-term corrosion damage to the pile foundation. The organic polymer material has weak aging resistance, and the reinforcement effect is not long in life. The basalt fiber sleeve reinforcement method has strong abrasion resistance, excellent fatigue resistance, and the excellent performance of the fiber itself, which is an excellent method for strengthening the wharf pile foundation. In order to further strengthen the mechanics and durability of the wharf pile foundation structure, a design method based on the basalt fiber sleeve to strengthen the wharf pile foundation was proposed.
发明内容SUMMARY OF THE INVENTION
针对上述现有技术的缺点或不足,本申请要解决的技术问题是提供一种基于玄武岩纤维套筒加固码头桩基的设计方法。In view of the above-mentioned shortcomings or deficiencies of the prior art, the technical problem to be solved by the present application is to provide a design method for reinforcing dock pile foundations based on basalt fiber sleeves.
为解决上述技术问题,本申请通过以下技术方案来实现:In order to solve the above-mentioned technical problems, the application realizes through the following technical solutions:
本申请提出了一种基于玄武岩纤维套筒加固码头桩基的设计方法,包括如下步骤:The present application proposes a design method for reinforced wharf pile foundation based on basalt fiber sleeve, which includes the following steps:
对受损梁底进行表面处理;Surface treatment of damaged beam bottoms;
对桩基表面粗糙处理;Rough treatment of pile foundation surface;
筋材施工;reinforcement construction;
安装玄武岩纤维套筒和底部密封件;Install the basalt fiber sleeve and bottom seal;
灌注掺有玄武岩纤维短切纱的水泥基灌浆料。Cement-based grout mixed with basalt fiber chopped strands is poured.
本申请还提出了一种基于玄武岩纤维套筒加固码头桩基的设计方法,包括如下步骤:The present application also proposes a design method for reinforced wharf pile foundation based on basalt fiber sleeve, including the following steps:
对受损梁底进行表面处理;Surface treatment of damaged beam bottoms;
对桩基表面粗糙处理;Rough treatment of pile foundation surface;
筋材施工;reinforcement construction;
安装玄武岩纤维套筒和底部密封件;Install the basalt fiber sleeve and bottom seal;
灌注水泥基灌浆料。Pour cement-based grout.
本申请又提出了一种基于玄武岩纤维套筒加固码头桩基的设计方法,包括如下步骤:The present application further proposes a design method for reinforced wharf pile foundation based on basalt fiber sleeve, comprising the following steps:
对受损梁底进行表面处理;Surface treatment of damaged beam bottoms;
对桩基表面粗糙处理;Rough treatment of pile foundation surface;
安装玄武岩纤维套筒和底部密封件;Install the basalt fiber sleeve and bottom seal;
灌注掺有玄武岩纤维短切纱的水泥基灌浆料。Cement-based grout mixed with basalt fiber chopped strands is poured.
可选地,上述的基于玄武岩纤维套筒加固码头桩基的设计方法,其中,在上述的筋材施工中,包括:在桩基外表面采用植筋的方法植入纵向筋以及安装箍筋。Optionally, in the above-mentioned design method for reinforced wharf pile foundation based on basalt fiber sleeve, in the above-mentioned reinforcement construction, it includes: implanting longitudinal reinforcement and installing stirrups on the outer surface of the pile foundation by planting reinforcement.
可选地,上述的基于玄武岩纤维套筒加固码头桩基的设计方法,其中,所述筋材包括:钢筋、玄武岩纤维复合筋、钢筋-连续玄武岩纤维复合筋或玄武岩纤维智能筋;纵向受力筋直径设计为8mm~16mm,箍筋直径设计为4mm~8mm。Optionally, in the above-mentioned design method for reinforcing wharf pile foundations based on basalt fiber sleeves, wherein the reinforcing bars include: steel bars, basalt fiber composite bars, steel bars-continuous basalt fiber composite bars, or basalt fiber smart bars; The diameter of the rib is designed to be 8mm to 16mm, and the diameter of the stirrup is designed to be 4mm to 8mm.
可选地,上述的基于玄武岩纤维套筒加固码头桩基的设计方法,其中,所述钢筋-连续玄武岩纤维复合筋是由内心钢筋和外包纵向玄武岩纤维复合筋复合而成。Optionally, in the above-mentioned design method for reinforced wharf pile foundation based on basalt fiber sleeve, wherein, the steel bar-continuous basalt fiber composite bar is composed of inner steel bar and outer longitudinal basalt fiber composite bar.
可选地,上述的基于玄武岩纤维套筒加固码头桩基的设计方法,其中,所述玄武岩纤维智能筋是将分布式传感光纤在玄武岩纤维复合筋的生产过程中埋入,形成受力与传感的特性于一体的自传感智能材料。Optionally, in the above-mentioned design method for reinforcing wharf pile foundations based on basalt fiber sleeves, the basalt fiber smart bars are made by burying the distributed sensing fiber in the production process of the basalt fiber composite bars to form a force and A self-sensing smart material that integrates sensing properties.
可选地,上述的基于玄武岩纤维套筒加固码头桩基的设计方法,其中,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为6~15mm。Optionally, in the above-mentioned design method for reinforcing wharf pile foundations based on basalt fiber sleeves, wherein the design length of the basalt fiber chopped strands incorporated in the cement-based grouting material is 6-15 mm.
可选地,上述的基于玄武岩纤维套筒加固码头桩基的设计方法,其中,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的单丝公称直径为9~25μm。Optionally, in the above-mentioned design method for reinforced wharf pile foundation based on basalt fiber sleeve, wherein, the nominal diameter of the monofilament of the basalt fiber chopped yarn mixed in the cement-based grouting material is 9-25 μm.
可选地,上述的基于玄武岩纤维套筒加固码头桩基的设计方法,其中,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的体积掺量为0.1%~0.3%。Optionally, in the above-mentioned design method for reinforced wharf pile foundation based on basalt fiber sleeve, wherein, the volume content of the basalt fiber chopped yarn mixed in the cement-based grouting material is 0.1%-0.3%.
与现有技术相比,本申请具有如下技术效果:Compared with the prior art, the present application has the following technical effects:
本申请中,通过设计在水泥基灌浆料掺入玄武岩纤维短切纱和/或在桩基外表面采用植筋的方法,来进一步提高玄武岩纤维套筒加固码头桩基结构的力学及耐久性能,不仅适用于码头桩基,对于水工、海工结构桩基基础皆有效。采用本申请对码头桩基加固修复后,无需进行再修补,节约桩基维护成本。In the present application, the mechanical and durability performance of the basalt fiber sleeve reinforced wharf pile foundation structure is further improved by designing the method of mixing basalt fiber chopped yarn into the cement-based grouting material and/or adopting the method of planting reinforcement on the outer surface of the pile foundation. It is not only suitable for dock pile foundations, but also effective for hydraulic and marine structural pile foundations. After the dock pile foundation is reinforced and repaired by the application, there is no need to re-repair, and the maintenance cost of the pile foundation is saved.
在本申请中,玄武岩纤维短切纱与水泥的热相容性好,与玄武岩纤维套筒粘结强度高,结构加固稳定。In the present application, the basalt fiber chopped yarn has good thermal compatibility with cement, high bonding strength with the basalt fiber sleeve, and stable structural reinforcement.
在本申请中,涉及的筋材种类多,钢筋最常用;玄武岩纤维复合筋最基本;钢筋-连续玄武岩纤维复合筋具有钢筋高延性和玄武岩纤维筋材高强度的互补优点,弹模高、抗拉强度高、耐腐蚀性强,在结构中有稳定可靠的“二次刚度”及优良的延性与耗能能力,震后残余位移小,易于修复等特点;玄武岩纤维智能筋可以及时对结构内部应力应变进行监测,且具有抗电磁干扰、分布式传感、测量精度高等特点。In this application, there are many types of rebars involved, and rebar is the most commonly used; basalt fiber composite rebar is the most basic; rebar-continuous basalt fiber composite rebar has the complementary advantages of high ductility of rebar and high strength of basalt fiber rebar, high elastic modulus, resistance to High tensile strength, strong corrosion resistance, stable and reliable "secondary stiffness" and excellent ductility and energy dissipation capacity in the structure, small residual displacement after earthquake, easy to repair, etc. It can monitor stress and strain, and has the characteristics of anti-electromagnetic interference, distributed sensing, and high measurement accuracy.
附图说明Description of drawings
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述,本申请的其它特征、目的和优点将会变得更明显:Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
图1:本申请一实施例基于玄武岩纤维套筒加固码头桩基的设计方法的流程图;Fig. 1: The flow chart of the design method of reinforced wharf pile foundation based on basalt fiber sleeve according to an embodiment of the present application;
图2:本申请另一实施例基于玄武岩纤维套筒加固码头桩基的设计方法的流程图;Fig. 2: a flow chart of a design method for reinforcing dock pile foundations based on basalt fiber sleeves according to another embodiment of the present application;
图3:本申请又一实施例基于玄武岩纤维套筒加固码头桩基的设计方法的流程图。Fig. 3 is a flow chart of a design method for reinforcing a dock pile foundation based on a basalt fiber sleeve according to another embodiment of the present application.
具体实施方式Detailed ways
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
实施例一Example 1
如图1所示,在本实施例中,一种基于玄武岩纤维套筒加固码头桩基的设计方法,包括如下步骤:As shown in Figure 1, in this embodiment, a design method for reinforcing dock pile foundations based on basalt fiber sleeves includes the following steps:
对受损梁底进行表面处理;Surface treatment of damaged beam bottoms;
对桩基表面粗糙处理;Rough treatment of pile foundation surface;
筋材施工;reinforcement construction;
安装玄武岩纤维套筒和底部密封件;Install the basalt fiber sleeve and bottom seal;
灌注掺有玄武岩纤维短切纱的水泥基灌浆料。Cement-based grout mixed with basalt fiber chopped strands is poured.
本实施例适用于:当桩基破损面积S>25%,加固厚度选取50~60mm;加固高度为破损区域上下50cm~60cm的场景中。This embodiment is applicable to: when the damaged area S of the pile foundation is greater than 25%, the reinforcement thickness is selected to be 50-60 mm; the reinforcement height is 50-60 cm above and below the damaged area.
本实施例中,通过设计在水泥基灌浆料掺入玄武岩纤维短切纱以及在桩基外表面采用植筋的方法,来进一步提高玄武岩纤维套筒加固码头桩基结构的力学及耐久性能,不仅适用于码头桩基,对于水工、海工结构桩基基础皆有效。采用本申请对码头桩基加固修复后,无需进行再修补,节约桩基维护成本。In this embodiment, the method of mixing basalt fiber chopped yarn into the cement-based grouting material and planting reinforcement on the outer surface of the pile foundation is designed to further improve the mechanics and durability of the basalt fiber sleeve to reinforce the wharf pile foundation structure, not only It is suitable for dock pile foundations, and is effective for hydraulic and marine structural pile foundations. After the dock pile foundation is reinforced and repaired by the application, there is no need to re-repair, and the maintenance cost of the pile foundation is saved.
在上述的对受损梁底进行表面处理中,通过凿除或高压淡水等方式清除受损梁底松动、破损混凝土至密实骨料,以便为后续安装玄武岩纤维套筒做好基础。In the above-mentioned surface treatment of the damaged beam bottom, the damaged beam bottom is removed from loose and damaged concrete to compact aggregate by chiseling or high-pressure fresh water, so as to lay the foundation for the subsequent installation of the basalt fiber sleeve.
在上述的筋材施工中,包括:在桩基外表面采用植筋的方法植入纵向筋以及安装箍筋。In the above reinforcement construction, it includes: implanting longitudinal reinforcement and installing stirrups on the outer surface of the pile foundation by planting reinforcement.
进一步优选地,在上述的筋材施工中,还包括:植入带有限位装置的纵向筋。进一步优选地,所述纵向筋与所述限位装置为一体成型结构,可实现批量化的加工和生产。Further preferably, in the above reinforcement construction, it also includes: implanting longitudinal reinforcement with a limiting device. Further preferably, the longitudinal rib and the limiting device are integrally formed, which can realize batch processing and production.
所述限位装置按照等间距排列,其中,横向间距与竖向间距为300~500mm。具体地,进一步优选地,所述横向间距为350~500mm;进一步优选地,所述横向间距为350~450mm;进一步优选地,所述横向间距为400~450mm;进一步优选地,所述纵向间距为350~500mm;进一步优选地,所述纵向间距为350~450mm;进一步优选地,所述纵向间距为400~450mm。The limiting devices are arranged at equal intervals, wherein the horizontal distance and the vertical distance are 300-500 mm. Specifically, it is further preferred that the lateral spacing is 350-500 mm; further preferably, the lateral spacing is 350-450 mm; further preferably, the lateral spacing is 400-450 mm; further preferably, the longitudinal spacing Preferably, the longitudinal spacing is 350-450 mm; further preferably, the longitudinal spacing is 400-450 mm.
进一步优选地,所述限位装置呈圆盘状结构,通过所述圆盘状结构的设置,可以起到限位、用于安装所述玄武岩纤维套筒以及用于安装下文所述的箍筋的作用。Further preferably, the limiting device has a disc-shaped structure, and through the setting of the disc-shaped structure, it can be used for limiting, for installing the basalt fiber sleeve and for installing the stirrups described below. effect.
所述限位装置的厚度进一步优选为1~2cm;所述限位装置的厚度进一步优选为1~1.5cm。The thickness of the limiting device is further preferably 1-2 cm; the thickness of the limiting device is further preferably 1-1.5 cm.
其中,在上述的箍筋中,具体地,所述箍筋具体地安装在所述限位装置上。其中,所述箍筋可进一步加强整体结构的强度,如,抗剪作用。Wherein, in the above stirrup, specifically, the stirrup is specifically installed on the limiting device. Wherein, the stirrups can further strengthen the strength of the overall structure, such as shear resistance.
在本实施例中,通过固定在所述纵向筋上的所述限位装置进行安装所述玄武岩纤维套筒,然后用固化胶粘贴接缝处,最后用紧固带进行固定。In this embodiment, the basalt fiber sleeve is installed by the limiting device fixed on the longitudinal rib, and then the joint is glued with curing glue, and finally fixed with a fastening tape.
进一步地,所述筋材包括:钢筋、玄武岩纤维复合筋、钢筋-连续玄武岩纤维复合筋或玄武岩纤维智能筋。Further, the reinforcing bars include: steel bars, basalt fiber composite bars, steel bars-continuous basalt fiber composite bars or basalt fiber smart bars.
其中,所述玄武岩纤维复合筋是指以玄武岩纤维材料为增强材料、树脂、填料等为基体,经过拉拢工艺制备而成的纤维增强复合材料制品,根据不同工艺可以生产出不同规格的纵向筋,箍筋以及环向筋等。Wherein, the basalt fiber composite bar refers to a fiber reinforced composite material product prepared by a drawing process with basalt fiber material as a reinforcing material, resin, filler, etc. as a matrix. Stirrups and hoop bars, etc.
其中,所述钢筋-连续玄武岩纤维复合筋是由内心钢筋和外包纵向玄武岩纤维复合筋复合而成。所述钢筋-连续玄武岩纤维复合筋具有钢筋高延性和玄武岩纤维筋材高强度的互补优点,弹模高、抗拉强度高、耐腐蚀性强,在结构中有稳定可靠的“二次刚度”及优良的延性与耗能能力,震后残余位移小,易于修复等特点。Wherein, the steel bar-continuous basalt fiber composite bar is composed of inner steel bar and outer longitudinal basalt fiber composite bar. The steel bar-continuous basalt fiber composite bar has the complementary advantages of high ductility of steel bar and high strength of basalt fiber bar, high elastic modulus, high tensile strength, strong corrosion resistance, and stable and reliable "secondary stiffness" in the structure. And excellent ductility and energy dissipation capacity, small residual displacement after earthquake, easy to repair and so on.
所述玄武岩纤维智能筋是将分布式传感光纤在玄武岩纤维复合筋的生产过程中埋入,形成受力与传感的特性于一体的自传感智能材料。玄武岩纤维智能筋可以及时对结构内部应力应变进行监测,且具有抗电磁干扰、分布式传感、测量精度高等特点。The basalt fiber smart bar is a self-sensing smart material that integrates the characteristics of force and sensing by embedding distributed sensing fibers in the production process of the basalt fiber composite bar. The basalt fiber smart bar can monitor the internal stress and strain of the structure in time, and has the characteristics of anti-electromagnetic interference, distributed sensing, and high measurement accuracy.
可选地,在上述的对桩基表面进行粗糙处理中,用气动工具等剔除桩基表面的涂层,进行粗糙化处理。要求处理后的桩基表面无涂层、油污等污损物,并用气动气磨机等将桩基表面进行打磨,增加与灌浆料的粘结力。Optionally, in the above-mentioned roughening treatment on the surface of the pile foundation, a pneumatic tool or the like is used to remove the coating on the surface of the pile foundation, and roughening treatment is performed. It is required that the surface of the pile foundation after treatment is free of contaminants such as coating and oil pollution, and the surface of the pile foundation should be polished with a pneumatic gas mill to increase the bonding force with the grouting material.
所述玄武岩纤维套筒由玄武岩纤维板材卷制而成,优选地,所述玄武岩纤维套筒为一体成型结构。The basalt fiber sleeve is rolled from a basalt fiber sheet, and preferably, the basalt fiber sleeve is an integral molding structure.
在本实施例中,所述玄武岩纤维套筒的厚度为5~6mm。进一步优选地,所述玄武岩纤维套筒的厚度为5.5~6mm。In this embodiment, the thickness of the basalt fiber sleeve is 5-6 mm. Further preferably, the thickness of the basalt fiber sleeve is 5.5-6 mm.
其中,在上述的安装底部密封件中,所述底部密封件包括但不限于:密封胶条,通过安装底部可压缩密封胶条,使得桩基与玄武岩纤维套筒底部之间不允许有空隙,以增加加固的可靠性。Wherein, in the above-mentioned installation of the bottom seal, the bottom seal includes but is not limited to: a sealing strip, the bottom can be compressed by installing the sealing strip, so that no gap is allowed between the pile foundation and the bottom of the basalt fiber sleeve, to increase the reliability of the reinforcement.
在本实施例中,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为6~15mm。进一步优选地,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为7~15mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为7~14mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为8~14mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为8~13mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为9~13mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为9~12mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为10~12mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为10~11mm;。In this embodiment, the design length of the basalt fiber chopped strands incorporated in the cement-based grouting material is 6-15 mm. Further preferably, the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 7-15 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 7-14mm; the design length of the basalt fiber chopped yarn mixed in the cement-based grouting material is 8-14 mm; the design length of the basalt fiber chopped yarn mixed in the cement-based grouting material is 8 to 13 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 9 to 13 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 9 to 12 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 10 to 12 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 10 ~ 11mm;.
进一步优选地,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的体积掺量为0.1%~0.3%;进一步优选地,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的体积掺量为0.15%~0.3%;进一步优选地,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的体积掺量为0.2%~0.3%;进一步优选地,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的体积掺量为0.2%~0.25%。Further preferably, the volume content of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.1% to 0.3%; further preferably, the basalt fiber incorporated in the cement-based grouting material The volume content of the chopped strands is 0.15% to 0.3%; further preferably, the volume content of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.2% to 0.3%; further preferably, The volume dosage of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.2% to 0.25%.
其中,玄武岩纤维短切纱与水泥的热相容性好,与玄武岩纤维套筒粘结强度高,结构加固稳定。Among them, basalt fiber chopped yarn has good thermal compatibility with cement, high bonding strength with basalt fiber sleeve, and stable structure reinforcement.
实施例二Embodiment 2
如图2所示,在本实施例中,一种基于玄武岩纤维套筒加固码头桩基的设计方法,包括如下步骤:As shown in Figure 2, in this embodiment, a design method for reinforcing dock pile foundations based on basalt fiber sleeves includes the following steps:
对受损梁底进行表面处理;Surface treatment of damaged beam bottoms;
对桩基表面粗糙处理;Rough treatment of pile foundation surface;
筋材施工;reinforcement construction;
安装玄武岩纤维套筒和底部密封件;Install the basalt fiber sleeve and bottom seal;
灌注水泥基灌浆料。Pour cement-based grout.
本实施例适用于:当桩基破损面积10%<S<25%,加固厚度选取30~50mm;加固高度为破损区域上下40cm~50cm的场景中。This embodiment is applicable to: when the damaged area of the pile foundation is 10% < S < 25%, the reinforcement thickness is 30 to 50 mm; the reinforcement height is 40 cm to 50 cm above and below the damaged area.
本实施例中,通过设计采用水泥基灌浆料以及在桩基外表面采用植筋的方法,来进一步提高玄武岩纤维套筒加固码头桩基结构的力学及耐久性能,不仅适用于码头桩基,对于水工、海工结构桩基基础皆有效。采用本申请对码头桩基加固修复后,无需进行再修补,节约桩基维护成本。In this embodiment, the method of using cement-based grouting material and planting reinforcement on the outer surface of the pile foundation is used to further improve the mechanical and durability performance of the basalt fiber sleeve to reinforce the wharf pile foundation structure, which is not only suitable for wharf pile foundations, but also for wharf pile foundations. Hydraulic and marine structural pile foundations are all effective. After the dock pile foundation is reinforced and repaired by the application, there is no need to re-repair, and the maintenance cost of the pile foundation is saved.
在上述的对受损梁底进行表面处理中,通过凿除或高压淡水等方式清除受损梁底松动、破损混凝土至密实骨料,以便为后续安装玄武岩纤维套筒做好基础。In the above-mentioned surface treatment of the damaged beam bottom, the damaged beam bottom is removed from loose and damaged concrete to compact aggregate by chiseling or high-pressure fresh water, so as to lay the foundation for the subsequent installation of the basalt fiber sleeve.
在上述的筋材施工中,包括:在桩基外表面采用植筋的方法植入纵向筋以及安装箍筋。In the above reinforcement construction, it includes: implanting longitudinal reinforcement and installing stirrups on the outer surface of the pile foundation by planting reinforcement.
在上述的筋材施工中,包括:在桩基外表面采用植筋的方法植入纵向筋以及安装箍筋。In the above reinforcement construction, it includes: implanting longitudinal reinforcement and installing stirrups on the outer surface of the pile foundation by planting reinforcement.
进一步优选地,在上述的筋材施工中,还包括:植入带有限位装置的纵向筋。进一步优选地,所述纵向筋与所述限位装置为一体成型结构,可实现批量化的加工和生产。Further preferably, in the above reinforcement construction, it also includes: implanting longitudinal reinforcement with a limiting device. Further preferably, the longitudinal rib and the limiting device are integrally formed, which can realize batch processing and production.
所述限位装置按照等间距排列,其中,横向间距与竖向间距为300~500mm。具体地,进一步优选地,所述横向间距为350~500mm;进一步优选地,所述横向间距为350~450mm;进一步优选地,所述横向间距为400~450mm;进一步优选地,所述纵向间距为350~500mm;进一步优选地,所述纵向间距为350~450mm;进一步优选地,所述纵向间距为400~450mm。The limiting devices are arranged at equal intervals, wherein the horizontal distance and the vertical distance are 300-500 mm. Specifically, it is further preferred that the lateral spacing is 350-500 mm; further preferably, the lateral spacing is 350-450 mm; further preferably, the lateral spacing is 400-450 mm; further preferably, the longitudinal spacing Preferably, the longitudinal spacing is 350-450 mm; further preferably, the longitudinal spacing is 400-450 mm.
进一步优选地,所述限位装置呈圆盘状结构,通过所述圆盘状结构的设置,可以起到限位、用于安装所述玄武岩纤维套筒以及用于安装下文所述的箍筋的作用。Further preferably, the limiting device has a disc-shaped structure, and through the setting of the disc-shaped structure, it can be used for limiting, for installing the basalt fiber sleeve and for installing the stirrups described below. effect.
所述限位装置的厚度进一步优选为1~2cm;所述限位装置的厚度进一步优选为1~1.5cm。The thickness of the limiting device is further preferably 1-2 cm; the thickness of the limiting device is further preferably 1-1.5 cm.
其中,在上述的箍筋中,具体地,所述箍筋具体地安装在所述限位装置上。其中,所述箍筋可进一步加强整体结构的强度,如,抗剪作用。Wherein, in the above stirrup, specifically, the stirrup is specifically installed on the limiting device. Wherein, the stirrups can further strengthen the strength of the overall structure, such as shear resistance.
在本实施例中,通过固定在所述纵向筋上的所述限位装置进行安装所述玄武岩纤维套筒,然后用固化胶粘贴接缝处,最后用紧固带进行固定。In this embodiment, the basalt fiber sleeve is installed by the limiting device fixed on the longitudinal rib, and then the joint is glued with curing glue, and finally fixed with a fastening tape.
进一步地,所述筋材包括:钢筋、玄武岩纤维复合筋、钢筋-连续玄武岩纤维复合筋或玄武岩纤维智能筋。Further, the reinforcing bars include: steel bars, basalt fiber composite bars, steel bars-continuous basalt fiber composite bars or basalt fiber smart bars.
其中,所述玄武岩纤维复合筋是指以玄武岩纤维材料为增强材料、树脂、填料等为基体,经过拉拢工艺制备而成的纤维增强复合材料制品,根据不同工艺可以生产出不同规格的纵向筋,箍筋以及环向筋等。Wherein, the basalt fiber composite bar refers to a fiber reinforced composite material product prepared by a drawing process with basalt fiber material as a reinforcing material, resin, filler, etc. as a matrix. Stirrups and hoop bars, etc.
其中,所述钢筋-连续玄武岩纤维复合筋是由内心钢筋和外包纵向玄武岩纤维复合筋复合而成。所述钢筋-连续玄武岩纤维复合筋具有钢筋高延性和玄武岩纤维筋材高强度的互补优点,弹模高、抗拉强度高、耐腐蚀性强,在结构中有稳定可靠的“二次刚度”及优良的延性与耗能能力,震后残余位移小,易于修复等特点。Wherein, the steel bar-continuous basalt fiber composite bar is composed of inner steel bar and outer longitudinal basalt fiber composite bar. The steel bar-continuous basalt fiber composite bar has the complementary advantages of high ductility of steel bar and high strength of basalt fiber bar, high elastic modulus, high tensile strength, strong corrosion resistance, and stable and reliable "secondary stiffness" in the structure. And excellent ductility and energy dissipation capacity, small residual displacement after earthquake, easy to repair and so on.
所述玄武岩纤维智能筋是将分布式传感光纤在玄武岩纤维复合筋的生产过程中埋入,形成受力与传感的特性于一体的自传感智能材料。玄武岩纤维智能筋可以及时对结构内部应力应变进行监测,且具有抗电磁干扰、分布式传感、测量精度高等特点。The basalt fiber smart bar is a self-sensing smart material that integrates the characteristics of force and sensing by embedding distributed sensing fibers in the production process of the basalt fiber composite bar. The basalt fiber smart bar can monitor the internal stress and strain of the structure in time, and has the characteristics of anti-electromagnetic interference, distributed sensing, and high measurement accuracy.
可选地,在上述的对桩基表面进行粗糙处理中,用气动工具等剔除桩基表面的涂层,进行粗糙化处理。要求处理后的桩基表面无涂层、油污等污损物,并用气动气磨机等将桩基表面进行打磨,增加与灌浆料的粘结力。Optionally, in the above-mentioned roughening treatment on the surface of the pile foundation, a pneumatic tool or the like is used to remove the coating on the surface of the pile foundation, and roughening treatment is performed. It is required that the surface of the pile foundation after treatment is free of contaminants such as coating and oil pollution, and the surface of the pile foundation should be polished with a pneumatic gas mill to increase the bonding force with the grouting material.
所述玄武岩纤维套筒由玄武岩纤维板材卷制而成,优选地,所述玄武岩纤维套筒为一体成型结构。The basalt fiber sleeve is rolled from a basalt fiber sheet, and preferably, the basalt fiber sleeve is an integral molding structure.
在本实施例中,所述玄武岩纤维套筒的厚度为3~10mm。进一步优选地,所述玄武岩纤维套筒的厚度为4~9mm;进一步优选地,所述玄武岩纤维套筒的厚度为4~8mm;进一步优选地,所述玄武岩纤维套筒的厚度为5~7mm;进一步优选地,所述玄武岩纤维套筒的厚度为5~6mm。In this embodiment, the thickness of the basalt fiber sleeve is 3-10 mm. Further preferably, the thickness of the basalt fiber sleeve is 4-9 mm; further preferably, the thickness of the basalt fiber sleeve is 4-8 mm; further preferably, the thickness of the basalt fiber sleeve is 5-7 mm ; Further preferably, the thickness of the basalt fiber sleeve is 5-6 mm.
其中,在上述的安装底部密封件中,所述底部密封件包括但不限于:密封胶条,通过安装底部可压缩密封胶条,使得桩基与玄武岩纤维套筒底部之间不允许有空隙,以增加加固的可靠性。Wherein, in the above-mentioned installation of the bottom seal, the bottom seal includes but is not limited to: a sealing strip, the bottom can be compressed by installing the sealing strip, so that no gap is allowed between the pile foundation and the bottom of the basalt fiber sleeve, to increase the reliability of the reinforcement.
实施例三Embodiment 3
如图3所示,在本实施例中,一种基于玄武岩纤维套筒加固码头桩基的设计方法,包括如下步骤:As shown in FIG. 3 , in this embodiment, a design method for reinforcing dock pile foundations based on basalt fiber sleeves includes the following steps:
对受损梁底进行表面处理;Surface treatment of damaged beam bottoms;
对桩基表面粗糙处理;Rough treatment of pile foundation surface;
安装玄武岩纤维套筒和底部密封件;Install the basalt fiber sleeve and bottom seal;
灌注掺有玄武岩纤维短切纱的水泥基灌浆料。Cement-based grout mixed with basalt fiber chopped strands is poured.
本实施例适用于:当桩基破损面积S<10%,加固厚度选取10~30mm;加固高度为破损区域上下30cm~40cm的使用场景中。This embodiment is applicable to: when the damaged area S of the pile foundation is less than 10%, the reinforcement thickness is selected from 10 to 30 mm; the reinforcement height is 30 cm to 40 cm above and below the damaged area.
本实施例中,通过设计在水泥基灌浆料掺入玄武岩纤维短切纱的方法,来进一步提高玄武岩纤维套筒加固码头桩基结构的力学及耐久性能,不仅适用于码头桩基,对于水工、海工结构桩基基础皆有效。采用本申请对码头桩基加固修复后,无需进行再修补,节约桩基维护成本。In this embodiment, the method of mixing basalt fiber chopped yarn into the cement-based grouting material is designed to further improve the mechanics and durability of the basalt fiber sleeve to reinforce the wharf pile foundation structure, which is not only suitable for wharf pile foundations, but also for hydraulic engineering. , Offshore structural pile foundations are effective. After the dock pile foundation is reinforced and repaired by the application, there is no need to re-repair, and the maintenance cost of the pile foundation is saved.
在上述的对受损梁底进行表面处理中,通过凿除或高压淡水等方式清除受损梁底松动、破损混凝土至密实骨料,以便为后续安装玄武岩纤维套筒做好基础。In the above-mentioned surface treatment of the damaged beam bottom, the damaged beam bottom is removed from loose and damaged concrete to compact aggregate by chiseling or high-pressure fresh water, so as to lay the foundation for the subsequent installation of the basalt fiber sleeve.
可选地,在上述的对桩基表面进行粗糙处理中,用气动工具等剔除桩基表面的涂层,进行粗糙化处理。要求处理后的桩基表面无涂层、油污等污损物,并用气动气磨机等将桩基表面进行打磨,增加与灌浆料的粘结力。Optionally, in the above-mentioned roughening treatment on the surface of the pile foundation, a pneumatic tool or the like is used to remove the coating on the surface of the pile foundation, and roughening treatment is performed. It is required that the surface of the pile foundation after treatment is free of contaminants such as coating and oil pollution, and the surface of the pile foundation should be polished with a pneumatic gas mill to increase the bonding force with the grouting material.
所述玄武岩纤维套筒由玄武岩纤维板材卷制而成,优选地,所述玄武岩纤维套筒为一体成型结构。The basalt fiber sleeve is rolled from a basalt fiber sheet, and preferably, the basalt fiber sleeve is an integral molding structure.
在本实施例中,所述玄武岩纤维套筒的厚度为3~10mm。进一步优选地,所述玄武岩纤维套筒的厚度为4~9mm;进一步优选地,所述玄武岩纤维套筒的厚度为4~8mm;进一步优选地,所述玄武岩纤维套筒的厚度为5~7mm;进一步优选地,所述玄武岩纤维套筒的厚度为5~6mm。In this embodiment, the thickness of the basalt fiber sleeve is 3-10 mm. Further preferably, the thickness of the basalt fiber sleeve is 4-9 mm; further preferably, the thickness of the basalt fiber sleeve is 4-8 mm; further preferably, the thickness of the basalt fiber sleeve is 5-7 mm ; Further preferably, the thickness of the basalt fiber sleeve is 5-6 mm.
其中,在上述的安装底部密封件中,所述底部密封件包括但不限于:密封胶条,通过安装底部可压缩密封胶条,使得桩基与玄武岩纤维套筒底部之间不允许有空隙,以增加加固的可靠性。Wherein, in the above-mentioned installation of the bottom seal, the bottom seal includes but is not limited to: a sealing strip, the bottom can be compressed by installing the sealing strip, so that no gap is allowed between the pile foundation and the bottom of the basalt fiber sleeve, to increase the reliability of the reinforcement.
在本实施例中,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为6~15mm。进一步优选地,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为7~15mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为7~14mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为8~14mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为8~13mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为9~13mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为9~12mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为10~12mm;所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的设计长度为10~11mm;。In this embodiment, the design length of the basalt fiber chopped strands incorporated in the cement-based grouting material is 6-15 mm. Further preferably, the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 7-15 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 7-14mm; the design length of the basalt fiber chopped yarn mixed in the cement-based grouting material is 8-14 mm; the design length of the basalt fiber chopped yarn mixed in the cement-based grouting material is 8 to 13 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 9 to 13 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 9 to 12 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 10 to 12 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 10 ~ 11mm;.
进一步优选地,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的体积掺量为0.1%~0.3%;进一步优选地,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的体积掺量为0.15%~0.3%;进一步优选地,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的体积掺量为0.2%~0.3%;进一步优选地,所述水泥基灌浆料中掺入的所述玄武岩纤维短切纱的体积掺量为0.2%~0.25%。Further preferably, the volume content of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.1% to 0.3%; further preferably, the basalt fiber incorporated in the cement-based grouting material The volume content of the chopped strands is 0.15% to 0.3%; further preferably, the volume content of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.2% to 0.3%; further preferably, The volume dosage of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.2% to 0.25%.
其中,玄武岩纤维短切纱与水泥的热相容性好,与玄武岩纤维套筒粘结强度高,结构加固稳定。Among them, basalt fiber chopped yarn has good thermal compatibility with cement, high bonding strength with basalt fiber sleeve, and stable structure reinforcement.
本申请中,通过设计在水泥基灌浆料掺入玄武岩纤维短切纱和/或在桩基外表面采用植筋的方法,来进一步提高玄武岩纤维套筒加固码头桩基结构的力学及耐久性能,不仅适用于码头桩基,对于水工、海工结构桩基基础皆有效。采用本申请对码头桩基加固修复后,无需进行再修补,节约桩基维护成本。因此,本申请具有良好的市场应用前景。In the present application, the mechanical and durability performance of the basalt fiber sleeve reinforced wharf pile foundation structure is further improved by designing the method of mixing basalt fiber chopped yarn into the cement-based grouting material and/or adopting the method of planting reinforcement on the outer surface of the pile foundation. It is not only suitable for dock pile foundations, but also effective for hydraulic and marine structural pile foundations. After the dock pile foundation is reinforced and repaired by the application, there is no need to re-repair, and the maintenance cost of the pile foundation is saved. Therefore, the present application has a good market application prospect.
在本申请的描述中,除非另有明确的规定和限定,术语“相连”、“连接”、“固定”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;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或两个元件的相互作用关系。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本申请中的具体含义。In the description of this application, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.
在本申请中,除非另有明确的规定和限定,第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触,也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且,第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方,或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方,或仅仅表示第一特征水平高度小于第二特征。In this application, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
在本实施例的描述中,术语“上”、“下”、“左”、“右”、等方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述和简化操作,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申请的限制。此外,术语“第一”、“第二”仅仅用于在描述上加以区分,并没有特殊的含义。In the description of this embodiment, the terms “upper”, “lower”, “left”, “right”, etc. are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplified operation , rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation on the present application. In addition, the terms "first" and "second" are only used for distinction in description, and have no special meaning.
以上实施例仅用以说明本申请的技术方案而非限定,参照较佳实施例对本申请进行了详细说明。本领域的普通技术人员应当理解,可以对本申请的技术方案进行修改或等同替换,而不脱离本申请技术方案的精神和范围,均应涵盖在本申请的权利要求范围内。The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. The present application is described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application, and all should be included within the scope of the claims of the present application.
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