WO2021227158A1 - 一种高强度降水用混凝土体支护系统 - Google Patents

一种高强度降水用混凝土体支护系统 Download PDF

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Publication number
WO2021227158A1
WO2021227158A1 PCT/CN2020/094477 CN2020094477W WO2021227158A1 WO 2021227158 A1 WO2021227158 A1 WO 2021227158A1 CN 2020094477 W CN2020094477 W CN 2020094477W WO 2021227158 A1 WO2021227158 A1 WO 2021227158A1
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Prior art keywords
pile
piles
supporting system
steel
holes
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PCT/CN2020/094477
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English (en)
French (fr)
Inventor
李全民
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南京钜力智能制造技术研究院有限公司
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Publication of WO2021227158A1 publication Critical patent/WO2021227158A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00—Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/10—Restraining of underground water by lowering level of ground water
    • E—FIXED CONSTRUCTIONS
    • 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
    • E02D5/22—Piles
    • E02D5/24—Prefabricated piles
    • E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
    • E—FIXED CONSTRUCTIONS
    • 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
    • E02D5/22—Piles
    • E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments

Definitions

  • the invention relates to the field of building construction, in particular to a high-strength concrete body supporting system for precipitation.
  • the application provides a high-strength concrete body supporting system for precipitation, which can replace the dewatering well to collect water, has high precipitation efficiency, low construction cost, and ensures the waterless construction of the foundation pit.
  • the present invention provides a high-strength concrete body support system for precipitation to at least solve or alleviate one or more technical problems in the prior art, or at least provide a beneficial option.
  • a high-strength concrete body supporting system for precipitation including a supporting structure composed of a plurality of piles sequentially spliced into a circle, each pile is formed with an inner hole along its axial direction, and some of the piles are formed on the inner side
  • the water seepage holes are formed on the outside of some of the other piles, and the water seepage holes connect the inner hole and the outside, so that both the inner and outer sides of the supporting structure can see water into the inner hole through the water seepage holes.
  • the support system When in use, the support system is set up around the foundation pit. In the north, there is little rain and the groundwater level is low.
  • the seepage hole can be set in the lower part of the pile (the lower part of the pile).
  • the water inside and outside the protective structure is collected into the inner hole, and then the water in the inner hole is discharged by the submersible pump arranged in the hole in the pile body, so that water accumulation in the foundation pit can be avoided.
  • the location of the seepage hole can be set according to the water level of the construction site. Among them, the number of piles with water seepage holes can be set according to actual needs.
  • Some of the piles can be provided with water seepage holes on the inner side, another part of the piles can be provided with water seepage holes on the outside, and some of the piles may not be provided with water seepage holes.
  • the internal and external water seepage holes can be set at intervals, and the number of intervals is different, and you can set them as needed.
  • a splicing seam is formed between two adjacent piles
  • Each pile is also provided with a grouting channel, the top of the grouting channel is provided with a grouting port, and the bottom is sealed, and the side of the grouting channel is provided with a guide connecting the grouting channel and the splicing joint. Through hole.
  • This arrangement can better realize the filling and sealing of the splicing joints.
  • the grouting method of this application is not easy to produce the waste of the paddle body, the grouting is easy, and the gap is filled. The effect is good.
  • the grouting channel is formed by a PVC grouting pipe arranged in the pile body.
  • a boss is provided at the splicing place of one of the piles, and a groove matching the boss is provided at the splicing place of the other pile.
  • each pile body includes a steel bar cage and concrete
  • the steel bar cage includes a ring bar cage
  • a plurality of steel bars are axially fixed on the ring bar cage
  • the PVC grouting pipe is fixed to two of them Between the steel bars, such arrangement ensures the strength of the pile body, and the PVC grouting pipes are arranged together to facilitate the pouring of concrete after they are fixed and avoid skewing.
  • the steel bars also include prestressed steel bars and non-prestressed steel bars; both compression resistance and bending resistance can be guaranteed, and the spaced distribution effect of non-prestressed steel bars and prestressed steel bars is better.
  • the supporting system further includes a connecting beam
  • the bottom of the connecting beam is provided with a positioning part that can be installed in cooperation with some of the piles
  • the connecting beam is also provided with an inner part that can be connected with other piles. Water intake hole with matching hole. This arrangement can strengthen the supporting structure.
  • the pile body corresponding to the water intake hole is provided with water seepage holes to facilitate the drainage of water collection.
  • the diameter of the water seepage hole gradually decreases from the inside to the outside, which can prevent the water seepage hole from being blocked to a certain extent.
  • the connecting beam is a concrete connecting beam
  • a rubber pallet is further provided at the bottom of the positioning portion
  • a mortar gap is formed between the rubber pallet and the positioning portion and the pile body
  • the connecting beam is provided with
  • the rubber support plate can prevent the positioning part from leaking into the inner hole.
  • the filling of the expanded mortar can realize the sealing and strengthening between the positioning part and the pile body.
  • the supporting system further includes a steel pile cap, and the steel pile cap is detachably connected to the pile body through a connector.
  • the steel pile cap is detachably connected to the pile body through a connector.
  • the connecting piece includes a turnbuckle fixed to the end of the steel bar; a tension hole countersunk screw that connects the steel pile cap with the turnbuckle nut.
  • a plurality of hook threaded holes can be provided on the steel pile cap.
  • the steel pile cap can be designed with a plurality of hook threaded holes distributed in a circumferential direction, which is convenient for installation.
  • the lifting equipment passes the hook on the steel pile cap to smoothly pull out the supporting pile, so that the supporting pile can be reused.
  • the steel pile cap is detachable. When used as a permanent support pile (such as river support pile, basement wall, underground pool wall, etc.), the steel pile cap can be removed and reused.
  • a steel pile cap is provided to increase the impact resistance of the pile head when the pile is driven. The hoop of the steel pile cap wraps the pile head and also protects the concrete pile head when the pile is pulled out. Damage to the concrete pile head is convenient for the pile body to be reused in the future.
  • the manufacturing method of the high-strength concrete body supporting system for precipitation is as follows:
  • Making the pile body firstly make a steel cage, and fix the PVC grouting pipe between two steel bars of the steel cage, and fix the rubber plug evenly on the steel cage; secondly, use the existing pile centrifugal technology to make the pile body; , The fixed rubber plugs are evenly distributed, and they are not easy to be misplaced during the preparation of the pile. After the pile is successfully prepared, the rubber plugs are removed to form water seepage holes.
  • Beam reinforcement Remove the steel pile cap of the pile body, and set a beam reinforcement on the top of the supporting structure.
  • the positioning part at the bottom of the beam extends into the inner holes of some piles, and the water intake holes on the beam correspond to some piles.
  • Expansion mortar is injected into the mortar gap formed between the rubber support plate and the positioning part and the pile body through the gap grouting pipe to realize the sealing and reinforcement between the beam and the pile body; among them, several pile bodies can be used.
  • a beam is used for reinforcement.
  • the present invention adopts the above-mentioned technical scheme, and has the following advantages:
  • an inner hole and a water seepage hole connected to the inner hole can be opened on the pile body, which can completely replace the existing dewatering well and greatly reduce the use cost. Moreover, it is not easy to accumulate a large amount of mud in the hole of the pile body, which can ensure the smooth drainage of the submersible pump, which is beneficial to improve the efficiency of precipitation in the inner hole.
  • the arrangement of the grouting channel and the through hole can realize the sealing of the gap between the two supporting piles by grouting when the two supporting piles are spliced together.
  • Fig. 1 is a top view of three splicing structures of piles in one embodiment of the present invention
  • Figure 2 is a schematic diagram of the structure of a single pile in Figure 1;
  • Figure 3 is a schematic diagram of the structure of the steel cage in the pile of Figure 2;
  • Fig. 5 is a schematic partial sectional view of the structure of the pile in Fig. 4;
  • Fig. 6 is a partial cross-sectional view of the structure along A-A in Fig. 4;
  • Fig. 7 is a schematic partial sectional view of the structure along B-B in Fig. 4;
  • FIG. 8 is a schematic partial cross-sectional structure diagram of one embodiment of the present invention.
  • Fig. 9 is a schematic diagram of an enlarged structure of part A in Fig. 8;
  • Fig. 10 is a schematic top view of the structure of Fig. 8;
  • Figure 11 is a schematic sectional view of the cap in Figure 8.
  • Fig. 12 is a schematic view of the top view structure of the pile enclosing support system in one of the embodiments;
  • Figure 13 is a schematic diagram of the structure of a pile in one of the embodiments.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present application, “multiple” means two or more than two, unless otherwise specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , Or integrated; it can be a mechanical connection, it can be an electrical connection, it can also be communication; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction relationship between two components .
  • installed can be a fixed connection or a detachable connection , Or integrated; it can be a mechanical connection, it can be an electrical connection, it can also be communication; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction relationship between two components .
  • the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. touch.
  • descriptions with reference to the terms “one embodiment”, “some embodiments”, “examples”, “specific examples”, or “some examples” etc. mean specific features described in conjunction with the embodiment or example ,
  • the structure, materials, or characteristics are included in at least one embodiment or example of the present application.
  • the schematic representations of the above terms do not necessarily refer to the same embodiment or example.
  • the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.
  • the high-strength concrete body supporting system for precipitation includes a supporting structure formed by successively splicing a plurality of piles 1 into a circle, and each pile 1 is along its axis.
  • An inner hole 11 is formed in the direction, some of the piles are formed with water seepage holes 12 on the inner side, and some of the piles are formed with water seepage holes 12 on the outer side. Both the inner and outer sides of the protective structure can seep water into the inner hole through the water seepage hole 12.
  • the support system is set up around the foundation pit. In the north, there is little rain and the groundwater level is low.
  • the seepage hole 12 can be arranged in the lower part of the pile 1 (the lower section of the pile).
  • the location of the seepage hole 12 is better.
  • the water inside and outside the supporting structure can be collected into the inner hole 11, and then the water in the inner hole can be discharged by the submersible pump arranged in the hole in the pile body, so that water accumulation in the foundation pit can be avoided.
  • the location of the seepage hole 12 can be specifically adapted according to the water level of the construction site. Among them, the number of piles with water seepage holes 12 can be set according to actual needs.
  • Some of the piles 1 can be provided with water seepage holes on the inside, another part of the piles 1 can be provided with water seepage holes on the outside, and some of the piles may not be provided with water seepage holes.
  • the internal and external water seepage holes can be set at intervals, and the number of intervals is different, and you can set them as needed.
  • a splicing joint is formed between two adjacent piles 1; each pile 1 is also provided with a grouting channel 13, and the top of the grouting channel 13 is provided with a grouting port and the bottom is sealed.
  • the side of the grouting channel 13 is provided with a through hole 14 connecting the grouting channel 13 and the splicing seam.
  • the grouting channel 13 is formed by a PVC grouting pipe arranged in the pile body.
  • one of the piles 1 is provided with a boss 15 at the splicing position, and the other pile 1 is provided with a groove 16 that matches with the boss 15 at the splicing position.
  • This arrangement facilitates quick and accurate splicing of the two piles 1.
  • Two types of piles can be provided, one is provided with bosses on both sides, and the other is provided with grooves on both sides; it can also be provided with a type of pile, where one side of the pile is provided with a boss and the other side is provided with a groove.
  • each pile 1 includes a steel bar cage 17 and a concrete 18, the steel bar cage 17 includes a ring bar cage 171, and a plurality of steel bars 172 are axially fixed on the ring bar cage 171, and the PVC grouting The pipe is fixed between two of the steel bars 172, so that the strength of the pile body is ensured, and the PVC grouting pipe is set together to facilitate the pouring of concrete after it is fixed and avoid skewing.
  • the steel bars 172 also include prestressed steel bars and non-prestressed steel bars; both compressive and flexural properties can be guaranteed, and the spaced distribution effect of non-prestressed steel bars and prestressed steel bars is better.
  • the supporting system further includes a connecting beam 2, and the bottom of the connecting beam 2 is provided with a positioning capable of cooperating with some of the piles 1 Part 21, the connecting beam 2 is also provided with a water intake hole 22 that can cooperate with the inner holes 11 of other piles. This arrangement can strengthen the supporting structure.
  • the pile body corresponding to the water intake hole 22 is provided with a water seepage hole 12 to facilitate the drainage of the water collection.
  • the diameter of the water seepage hole 12 gradually decreases from the inside to the outside, which can prevent the water seepage hole from being blocked to a certain extent.
  • the connecting beam 2 is a concrete connecting beam
  • a rubber pallet 23 is further provided at the bottom of the positioning portion 21, and a mortar joint is formed between the rubber pallet 23 and the positioning portion 21 and the pile body 1.
  • the connecting beam is provided with a gap grouting pipe 24 that connects the outside with the mortar gap, and the mortar gap is filled with expansion mortar 25.
  • the rubber support plate can prevent the positioning part from leaking into the inner hole.
  • the filling of the expanded mortar 25 can realize the sealing and strengthening between the positioning part and the pile body.
  • the supporting system further includes a steel pile cap 3, and the steel pile cap 3 is connected to the pile body 1 through a connecting piece 4 Removable connection between.
  • the steel pile cap is fixed on the top of the pile to facilitate pile driving; the steel pile cap can be reused and used on different piles.
  • the connecting member 4 includes a turnbuckle 41 fixedly connected to the end of the reinforcing steel 172;
  • a plurality of hook threaded holes 31 may be provided on the steel pile cap, wherein the steel pile cap 3 may be designed with a plurality of hook threaded holes distributed in a circumferential direction, which is convenient Install multiple hooks.
  • the steel pile cap 3 is a detachable type. When used as a permanent support pile (such as river support pile, basement wall, underground pool wall, etc.), the steel pile cap can be removed and reused.
  • a steel pile cap 3 is provided to increase the impact resistance of the pile head during pile driving. When the pile is pulled out, the hoop of the steel pile cap wraps the pile head and also protects the concrete pile head. When the pile pulling equipment shakes the pile, the concrete pile head will not be damaged and the pile body can be reused in the future.
  • the shape of the pile body of the present application can be the square in FIG. 2, or it can be rectangular, circular, elliptical, hexagonal, octagonal, or the like.
  • the bottom of the pile body is formed with a tip, which facilitates the sinking of the pile body during pile driving and saves driving force and time.
  • the manufacturing method of the high-strength concrete body supporting system for precipitation is as follows:
  • Making the pile body firstly make a steel cage, and fix the PVC grouting pipe between two steel bars of the steel cage, and fix the rubber plug evenly on the steel cage; secondly, use the existing pile centrifugal technology to make the pile body; , The fixed rubber plugs are evenly distributed, and they are not easy to be misplaced during the preparation of the pile. After the pile is successfully prepared, the rubber plugs are removed to form water seepage holes.
  • Beam reinforcement Remove the steel pile cap of the pile body, and set a beam reinforcement on the top of the supporting structure.
  • the positioning part at the bottom of the beam extends into the inner holes of some piles, and the water intake holes on the beam correspond to some piles.
  • Expansion mortar is injected into the mortar gap formed between the rubber pallet and the connecting beam and the pile through the gap grouting pipe to realize the sealing and reinforcement between the beam and the pile; among them, several piles can be used.
  • a beam is used for reinforcement.

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Abstract

本发明涉及一种高强度降水用混凝土体支护系统，该高强度降水用混凝土体支护系统，包括由多个桩体依次拼接成圈的支护结构，每个桩体沿其轴向方向形成有内孔，在其中一些桩体的内侧形成有渗水孔，在其中另一些桩体的外侧形成有渗水孔，所述渗水孔连通内孔和外界，以使支护结构的内外侧都能够通过渗水孔向内孔中渗水。该高强度降水用混凝土体支护系统，通过在桩体上开设内孔及与内孔连通的渗水孔，可以完全代替现有降水井使用，大大降低了使用成本。且桩体内孔中不易聚集大量泥块，可以保证潜水泵顺畅的排水工作，有利于提高内孔降水效率。

Description

一种高强度降水用混凝土体支护系统 技术领域
本发明涉及建筑施工领域，尤其涉及一种高强度降水用混凝土体支护系统。
背景技术
建筑施工过程中，在基坑支护时需要做多个钢管降水井，经与降水井连通的地下坑道流入水仓，再由水泵经专门排水井排到地面或由排水坑道直接流出地面，由于降水井泥水汇聚，容易导致水泵阻塞，影响降水效率；此外，在施工完毕后，还需要封堵降水井，导致施工成本较高。
本申请提供了一种高强度降水用混凝土体支护系统，能够代替降水井集水，降水效率高，施工成本低，保证了基坑无水施工。
发明内容
本发明为了弥补现有技术的不足，提供了一种高强度降水用混凝土体支护系统，以至少解决或缓解现有技术中的一个或多个技术问题，或至少提供一种有益的选择。
本发明为解决上述技术问题所采用的技术方案是：
一种高强度降水用混凝土体支护系统，包括由多个桩体依次拼接成圈的支护结构，每个桩体沿其轴向方向形成有内孔，在其中一些桩体的内侧形成有渗水孔，在其中另一些桩体的外侧形成有渗水孔，所述渗水孔连通内孔和外界，以使支护结构的内外侧都能够通过渗水孔向内孔中渗水。
使用时，将支护系统设置在基坑周圈，在北方，雨水少，地下水位较低，渗水孔可设置在桩体中下部(桩体下段)位置较好，渗水孔的设置可以将支护结构内外侧的水收集至内孔中，再通过设于桩体内孔中的潜水泵将内孔中的水排出即可，如此可避免基坑内积水。在南方，雨水多，地下水位较高，渗水孔 设置在桩体中部较好，需要说明的是，渗水孔的位置可根据建筑施工地方的水位情况具体适应设置。其中，设置有渗水孔的桩体个数根据实际需要设置，可以在部分桩体内侧设置渗水孔，另一部分桩体外侧设置渗水孔，还可以有部分桩体不设置渗水孔。内外渗水孔可以间隔设置，间隔个数不一，根据需要设置即可。
可选的，相邻两个桩体之间形成有拼接缝；
每个桩体上还设有注浆通道，所述注浆通道的顶部设有注浆口、底部密封设置，所述注浆通道的侧部设有将注浆通道与拼接缝连通的导通孔。
如此设置，可以较好的实现拼接缝填充密封，相比较传统的从顶部向拼接缝强注的方式来说，本申请的注浆方式，不易产生桨体浪费，注浆轻松，缝隙填充效果好。
可选的，所述注浆通道由设于桩体内的PVC注浆管形成。
可选的，相邻两个桩体中，其中一个桩体的拼接处设有凸台，另一个桩体的拼接处设有与凸台配合的凹槽。如此设置便于两个桩体快速准确拼接。
可选的，每个桩体包括钢筋笼和混凝土，所述钢筋笼包括环筋笼，所述环筋笼上轴向固接有多个钢筋，所述PVC注浆管固接于其中两个钢筋之间，如此设置，桩体强度有保证，且PVC注浆管一起设置，便于其固定后浇筑混凝土，避免歪斜。
可选的，所述钢筋还包括预应力钢筋和非预应力钢筋；抗压和抗弯性能都能够保证，非预应力钢筋和预应力钢筋间隔分布效果较好。
可选的，所述支护系统还包括连接梁，所述连接梁的底部设有能够与其中一些桩体配合安装的定位部，所述连接梁上还设有能够与另一些桩体的内孔配合的取水孔。如此设置，可将支护结构加固。
可选的，对应取水孔的桩体上开设有渗水孔，便于集水导出。
所述渗水孔由内向外直径逐渐减小，可在一定程度上防止渗水孔阻塞。
可选的，所述连接梁为混凝土连接梁，所述定位部的底部还设有橡胶托板，所述橡胶托板与定位部、桩体之间形成有砂浆缝，所述连接梁上设有将外界与砂浆缝连通的缝隙注浆管，所述砂浆缝中填充有膨胀砂浆。橡胶托板的设置，可以避免定位部漏浆至内孔中。膨胀砂浆的填充可以实现定位部与桩体之间密封加固。
可选的，所述支护系统还包括钢制桩帽，所述钢制桩帽通过连接件与所述桩体之间可拆卸连接。在桩体固定在基坑中时，需要打桩，在桩体顶部固定钢制桩帽，方便打桩；钢制桩帽可以重复利用，使用在不同桩体上。具体的，所述连接件包括与钢筋端部固接的套筒螺母；将钢制桩帽与套筒螺母连接的张拉孔沉头螺钉。为了方便桩体取出重新利用，可以在所述钢制桩帽上设置多个吊钩螺纹孔，其中，钢制桩帽上可设计有多个呈周向分布的吊钩螺纹孔，便于安装多个吊钩，当建筑工程完工收尾需要拔出支护桩时，起吊设备通过钢制桩帽上的吊钩，顺利拔出本支护桩，从而实现支护桩可以重复利用。
其中，钢制桩帽为可拆卸型，在作为永久性支护桩(如河道支护桩、地下室墙体、地下水池墙体等)时，钢制桩帽可以拆卸下来重复使用。且设置钢制桩帽，便于打桩时增加桩头的耐冲击性能，拔桩时钢制桩帽的抱箍包裹了桩头也同样保护了混凝土桩头，在拔桩设备对桩摇动时不至于损伤混凝土桩头便于桩体以后重复使用。
可选的，
该高强度降水用混凝土体支护系统的制作方法如下：
1、制作桩体：首先制作钢筋笼，并在钢筋笼的其中两个钢筋之间固定PVC注浆管，在钢筋笼上均匀固定胶塞；其次采用现有桩体离心工艺制作桩体；其中，固定胶塞分布均匀，桩体制备过程中不易错位，桩体制备成功后打掉胶塞即形成渗水孔。
2、制作支护结构：首先将桩体按照拼接方式固定在基坑中，具体为通过在桩体顶部固定钢制桩帽，通过打桩方式将桩体打入地面中；其次，向注浆通 道中注浆来填补相连桩体之间的拼接缝；多点填充更均匀，自桩体拼接缝隙由内往外填充密封效果更好；
3、横梁加固：将桩体的钢制桩帽拆下，并在支护结构顶部设置横梁加固，横梁底部的定位部伸入至一些桩体的内孔中，横梁上的取水孔对应一些桩体的内孔；
4、注浆：通过缝隙注浆管向橡胶托板与定位部、桩体之间形成的砂浆缝中注膨胀砂浆，以实现横梁与桩体之间的密封加固；其中，可以几个桩体采用一个横梁加固。
需要注意的是，在对应取水孔的桩体开渗水孔即可，并在内孔中放置潜水泵抽水。
本发明采用上述技术方案，所具有的优点是：
本申请通过在桩体上开设内孔及与内孔连通的渗水孔，可以完全代替现有降水井使用，大大降低了使用成本。且桩体内孔中不易聚集大量泥块，可以保证潜水泵顺畅的排水工作，有利于提高内孔降水效率。此外，注浆通道和导通孔的设置，能够在拼接两个支护桩时注浆实现两者之间缝隙密封。
附图说明
图1为本发明其中一个实施例中三个桩体拼接结构的俯视图；
图2为图1中单个桩体的结构示意图；
图3为图2桩体内钢筋笼的结构示意图；
图4为本发明其中一个实施例中桩体与连接梁配合连接的局部剖视图；
图5为图4中桩体的局部剖视结构示意图；
图6为图4中沿A-A局部剖视结构示意图；
图7为图4中沿B-B局部剖视结构示意图；
图8为本发明其中一实施例的局部剖视结构示意图；
图9为图8中A部分放大结构示意图；
图10为图8的俯视结构示意图；
图11为图8中盖帽的剖视结构示意图；
图12为其中一实施例中桩体围成支护系统的俯视结构示意图；
图13为其中一实施例中桩体的结构示意图。
图中，1、桩体，11、内孔，12、渗水孔，13、注浆通道，14、导通孔，15、凸台，16、凹槽，17、钢筋笼，171、环筋笼，172、钢筋，18、混凝土；2、连接梁，21、定位部，22、取水孔；3、钢制桩帽，31、吊钩螺纹孔，4、连接件，41、套筒螺母，42、张拉孔沉头螺钉。
具体实施方式
为能清楚说明本方案的技术特点，下面通过具体实施方式并结合附图，对本发明进行详细阐述。
在下面的描述中阐述了很多具体细节以便于充分理解本申请，但是，本申请还可以采用其他不同于在此描述的其他方式来实施，因此，本申请的保护范围并不受下面公开的具体实施例的限制。
另外，在本申请的描述中，需要理解的是，术语“中心”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多该特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，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，还可以是通信；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。
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“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。
如图1-3，12所示，本实施例中，该高强度降水用混凝土体支护系统，包括由多个桩体1依次拼接成圈的支护结构，每个桩体1沿其轴向方向形成有内孔11，在其中一些桩体的内侧形成有渗水孔12，在其中另一些桩体的外侧形成有渗水孔12，所述渗水孔12连通内孔11和外界，以使支护结构的内外侧都能够通过渗水孔12向内孔中渗水。使用时，将支护系统设置在基坑周圈，在北方，雨水少，地下水位较低，渗水孔12可设置在桩体1中下部(桩体下段)位置较好，渗水孔12的设置可以将支护结构内外侧的水收集至内孔11中，再通过设于桩体内孔中的潜水泵将内孔中的水排出即可，如此可避免基坑内积水。在南方，雨水多，地下水位较高，渗水孔12设置在桩体1中部较好，需要说明的是，渗水孔12的位置可根据建筑施工地方的水位情况具体适应设置。其中，设置有渗水孔12的桩体1个数根据实际需要设置，可以在部分桩体1内侧设置渗水孔，另一部分桩体1外侧设置渗水孔，还可以有部分桩体不设置渗水孔。内外渗水孔可以间隔设置，间隔个数不一，根据需要设置即可。
可理解的，相邻两个桩体1之间形成有拼接缝；每个桩体1上还设有注浆通道13，所述注浆通道13的顶部设有注浆口、底部密封设置，所述注浆通道13的侧部设有将注浆通道13与拼接缝连通的导通孔14。如此设置，可以较好 的实现拼接缝填充密封，相比较传统的从顶部向拼接缝强注的方式来说，本申请的注浆方式，不易产生桨体浪费，注浆轻松，缝隙填充效果好。
可理解的，所述注浆通道13由设于桩体内的PVC注浆管形成。
可理解的，相邻两个桩体1中，其中一个桩体1的拼接处设有凸台15，另一个桩体1的拼接处设有与凸台15配合的凹槽16。如此设置便于两个桩体1快速准确拼接。可以设置两种桩体，一种两侧设置凸台，一种两侧设置凹槽；还可以设置一种桩体，桩体一侧设置凸台一侧设置凹槽。
可理解的，每个桩体1包括钢筋笼17和混凝土18，所述钢筋笼17包括环筋笼171，所述环筋笼171上轴向固接有多个钢筋172，所述PVC注浆管固接于其中两个钢筋172之间，如此设置，桩体强度有保证，且PVC注浆管一起设置，便于其固定后浇筑混凝土，避免歪斜。
可理解的，所述钢筋172还包括预应力钢筋和非预应力钢筋；抗压和抗弯性能都能够保证，非预应力钢筋和预应力钢筋间隔分布效果较好。
可理解的，在其中一个实施例中，如图4-7所示，所述支护系统还包括连接梁2，所述连接梁2的底部设有能够与其中一些桩体1配合安装的定位部21，所述连接梁2上还设有能够与另一些桩体的内孔11配合的取水孔22。如此设置，可将支护结构加固。
可理解的，对应取水孔22的桩体上开设有渗水孔12，便于集水导出。
可理解的，所述渗水孔12由内向外直径逐渐减小，可在一定程度上防止渗水孔阻塞。
可理解的，所述连接梁2为混凝土连接梁，所述定位部21的底部还设有橡胶托板23，所述橡胶托板23与定位部21、桩体1之间形成有砂浆缝，所述连接梁上设有将外界与砂浆缝连通的缝隙注浆管24，所述砂浆缝中填充有膨胀砂浆25。橡胶托板的设置，可以避免定位部漏浆至内孔中。膨胀砂浆25的填充可以实现定位部与桩体之间密封加固。
可理解的，在其中一个实施例中，如图8-11所示，所述支护系统还包括钢制桩帽3，所述钢制桩帽3通过连接件4与所述桩体1之间可拆卸连接。在桩体固定在基坑中时，需要打桩，在桩体顶部固定钢制桩帽，方便打桩；钢制桩帽可以重复利用，使用在不同桩体上。具体的，所述连接件4包括与钢筋172端部固接的套筒螺母41；将钢制桩帽3与套筒螺母41连接的张拉孔沉头螺钉42。为了方便桩体取出重新利用，可以在所述钢制桩帽上设置多个吊钩螺纹孔31，其中，钢制桩帽3上可设计有多个呈周向分布的吊钩螺纹孔，便于安装多个吊钩，当建筑工程完工收尾需要拔出支护桩时，起吊设备通过钢制桩帽上的吊钩，顺利拔出本支护桩，从而实现支护桩可以重复利用。
其中，钢制桩帽3为可拆卸型，在作为永久性支护桩(如河道支护桩、地下室墙体、地下水池墙体等)时，钢制桩帽可以拆卸下来重复使用。且设置钢制桩帽3，便于打桩时增加桩头的耐冲击性能。拔桩时钢制桩帽的抱箍包裹了桩头也同样保护了混凝土桩头，在拔桩设备对桩摇动时不至于损伤混凝土桩头便于桩体以后重复使用。
需要说明的是，本申请桩体的外形可为图2中的方形，也可以采用矩形、圆形、椭圆、六角、八角等形状。
可理解的，在其中一个实施例中，如图13所示，所述桩体的底部形成有尖端，便于打桩时桩体下沉，节省打桩力量和时间。
该高强度降水用混凝土体支护系统的制作方法如下：
1、制作桩体：首先制作钢筋笼，并在钢筋笼的其中两个钢筋之间固定PVC注浆管，在钢筋笼上均匀固定胶塞；其次采用现有桩体离心工艺制作桩体；其中，固定胶塞分布均匀，桩体制备过程中不易错位，桩体制备成功后打掉胶塞即形成渗水孔。
2、制作支护结构：首先将桩体按照拼接方式固定在基坑中，具体为通过在桩体顶部固定钢制桩帽，通过打桩方式将桩体打入地面中；其次，向注浆通 道中注浆来填补相连桩体之间的拼接缝；多点填充更均匀，自桩体拼接缝隙由内往外填充密封效果更好；
3、横梁加固：将桩体的钢制桩帽拆下，并在支护结构顶部设置横梁加固，横梁底部的定位部伸入至一些桩体的内孔中，横梁上的取水孔对应一些桩体的内孔；
4、注浆：通过缝隙注浆管向橡胶托板与连接梁、桩体之间形成的砂浆缝中注膨胀砂浆，以实现横梁与桩体之间的密封加固；其中，可以几个桩体采用一个横梁加固。
上述具体实施方式不能作为对本发明保护范围的限制，对于本技术领域的技术人员来说，对本发明实施方式所做出的任何替代改进或变换均落在本发明的保护范围内。
本发明未详述之处，均为本技术领域技术人员的公知技术。

Claims (10)

  1. 一种高强度降水用混凝土体支护系统，其特征在于，包括由多个桩体依次拼接成圈的支护结构，每个桩体沿其轴向方向形成有内孔，在其中一些桩体的内侧形成有渗水孔，在其中另一些桩体的外侧形成有渗水孔，所述渗水孔连通内孔和外界，以使支护结构的内外侧都能够通过渗水孔向内孔中渗水。
  2. 根据权利要求1所述的高强度降水用混凝土体支护系统，其特征在于，相邻两个桩体之间形成有拼接缝；
    每个桩体上还设有注浆通道，所述注浆通道的顶部设有注浆口、底部密封设置，所述注浆通道的侧部设有将注浆通道与拼接缝连通的导通孔。
  3. 根据权利要求2所述的高强度降水用混凝土体支护系统，其特征在于，所述注浆通道由设于桩体内的PVC注浆管形成。
  4. 根据权利要求2或3所述的高强度降水用混凝土体支护系统，其特征在于，相邻两个桩体中，其中一个桩体的拼接处设有凸台，另一个桩体的拼接处设有与凸台配合的凹槽。
  5. 根据权利要求3所述的高强度降水用混凝土体支护系统，其特征在于，每个桩体包括钢筋笼和混凝土，所述钢筋笼包括环筋笼，所述环筋笼上轴向固接有多个钢筋，所述PVC注浆管固接于其中两个钢筋之间。
  6. 根据权利要求5所述的高强度降水用混凝土体支护系统，其特征在于，所述钢筋还包括预应力钢筋和非预应力钢筋；非预应力钢筋和预应力钢筋间隔分布。
  7. 根据权利要求1所述的高强度降水用混凝土体支护系统，其特征在于，所述支护系统还包括：
    连接梁，所述连接梁的底部设有能够与其中一些桩体配合安装的定位部，所述连接梁上还设有能够与另一些桩体的内孔配合的取水孔。
  8. 根据权利要求7所述的高强度降水用混凝土体支护系统，其特征在于，对应取水孔的桩体上开设有渗水孔。
  9. 根据权利要求7所述的高强度降水用混凝土体支护系统，其特征在于，所述连接梁为混凝土连接梁，所述定位部的底部还设有橡胶托板，所述橡胶托板与定位部、桩体之间形成有砂浆缝，所述连接梁上设有将外界与砂浆缝连通的缝隙注浆管，所述砂浆缝中填充有膨胀砂浆。
  10. 根据权利要求5所述高强度降水用混凝土体支护系统，其特征在于，所述支护系统还包括：
    钢制桩帽，所述钢制桩帽通过连接件与所述桩体之间可拆卸连接；
    所述连接件包括与钢筋端部固接的套筒螺母；将钢制桩帽与套筒螺母连接的张拉孔沉头螺钉。
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