WO2023093632A1 - 一种用于胶结卵石地质的锁扣钢管桩围堰 - Google Patents

一种用于胶结卵石地质的锁扣钢管桩围堰 Download PDF

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Publication number
WO2023093632A1
WO2023093632A1 PCT/CN2022/132840 CN2022132840W WO2023093632A1 WO 2023093632 A1 WO2023093632 A1 WO 2023093632A1 CN 2022132840 W CN2022132840 W CN 2022132840W WO 2023093632 A1 WO2023093632 A1 WO 2023093632A1
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WIPO (PCT)
Prior art keywords
steel pipe
cofferdam
pipe pile
pebble
cemented
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PCT/CN2022/132840
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English (en)
French (fr)
Inventor
王海涛
郝德洋
寇卫国
凡春胜
唐琪
李光均
王永明
姚承尚
赵士杰
朱邦志
高林龙
梅韬
黄家军
侯仁江
谢学锋
刘鹏飞
刘广
Original Assignee
中铁上海工程局集团有限公司
中铁投资集团有限公司
中铁上海工程局集团第一工程有限公司
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Application filed by 中铁上海工程局集团有限公司, 中铁投资集团有限公司, 中铁上海工程局集团第一工程有限公司 filed Critical 中铁上海工程局集团有限公司
Priority to DE212022000111.7U priority Critical patent/DE212022000111U1/de
Publication of WO2023093632A1 publication Critical patent/WO2023093632A1/zh

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    • 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
    • E02D19/02—Restraining of open water
    • E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
    • 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
    • E02D5/28—Prefabricated piles made of steel or other metals
    • E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements

Definitions

  • the utility model relates to the field of cofferdams, in particular to a locking steel pipe pile cofferdam for cemented pebble geology.
  • Cofferdam refers to the temporary enclosure structure built for the construction of permanent water facilities in the construction of water projects.
  • the frequency of foundation cleaning will be increased.
  • a second foundation cleaning will be carried out to ensure that the steel pipe piles can be inserted and driven in place, so that the cofferdam construction can go smoothly.
  • the purpose of the utility model is to overcome the deficiencies of the prior art and provide a novel cofferdam structure capable of realizing secondary cleanup.
  • a locking steel pipe pile cofferdam for cemented pebble geology comprising a steel pipe pile structure, the steel pipe pile structure includes a plurality of locking steel pipe piles, and the plurality of locking steel pipe piles are connected in sequence to form a rectangle Frame structure; the inside of the rectangular frame structure is provided with a steel casing; the steel casing is connected with a cofferdam auxiliary support mechanism.
  • the steel pipe pile structure is also provided with a ring beam structure, and the ring beam structure includes a first layer of ring beams, a second layer of ring beams and a third layer of ring beams; the first layer of ring beams, the second layer of ring beams The beams and the ring beams of the third layer are arranged at intervals from top to bottom inside the steel pipe pile structure; the auxiliary supporting mechanism of the cofferdam is arranged above the ring beams of the first layer.
  • the steel pipe pile structure is provided with supporting brackets inside, and the supporting brackets are connected to one or more locking steel pipe piles in the steel pipe pile structure; in the locking steel pipe piles connected with the supporting brackets Formwork concrete is provided.
  • the bottom of the steel pipe pile structure is provided with a bottom concrete layer.
  • the cofferdam auxiliary support mechanism includes a support beam; one end of the support beam is connected to the steel pipe pile structure, and the other end is connected to the steel casing.
  • An auxiliary part is provided at the end of the support beam close to the steel casing, and the auxiliary part includes a support plate arranged on the support beam. One end of the support plate is arranged on the support beam, and the other end is attached to the steel casing.
  • Two auxiliary parts are arranged on the supporting beam, and the two auxiliary parts are symmetrically distributed at both ends of the supporting beam.
  • the support plate is arranged obliquely; the central axis of the support beam passes through the center point of the steel casing; the support beam is perpendicular to the side wall of the cofferdam connected to the support beam.
  • the bonding area between the support plate and the steel casing is provided with an arc-shaped groove.
  • a supporting pad is arranged in the arc-shaped groove.
  • the utility model discloses a locking steel pipe pile cofferdam for cemented pebble geology.
  • the utility model can support the periphery of the cofferdam when the cofferdam is cleared for the second time through the auxiliary supporting mechanism of the cofferdam, so as to avoid the cofferdam When the foundation is cleared, it is greatly deformed due to the pressure around the foundation pit, which affects the subsequent normal use.
  • Fig. 1 is the structural representation of the utility model.
  • FIG. 2 is a partially enlarged view of FIG. 1 .
  • Fig. 3 is a structural schematic diagram of the cofferdam auxiliary support mechanism in the utility model.
  • Figure 4 is a front view of the utility model during construction.
  • Fig. 5 is a schematic diagram of the structure of the utility model when the supporting corbel is set.
  • a locking steel pipe pile cofferdam for cemented pebble geology comprising a steel pipe pile structure 11, a ring beam structure 12 is arranged inside the steel pipe pile structure 11, and the steel pipe pile structure 11 includes a plurality of lock buckles
  • a steel pipe pile 111, a plurality of locking steel pipe piles 111 are sequentially connected to form a rectangular frame structure; a steel casing 2 is arranged inside the rectangular frame structure; the steel casing 2 is connected with a cofferdam auxiliary support mechanism 3;
  • the cofferdam auxiliary support mechanism includes a support beam 31; one end of the support beam 31 is connected with the inner wall of the cofferdam 1, and the other end is connected with the steel casing 2 inside the cofferdam 1;
  • the utility model discloses a
  • the locking steel pipe pile 111 cofferdam of cemented pebble geology the utility model can realize the cofferdam 1 secondary clearing of the foundation through the setting of the cofferdam auxiliary support mechanism 3, that is, the cooperative use of the support beam 31 and the auxiliary part 32.
  • the cofferdam auxiliary support mechanism 3 disclosed in the utility model mainly includes a support beam 31, and the support beam 31 acts as a lateral support, and supports the inner wall of the cofferdam by cooperating with the steel casing 2, thereby ensuring that the cofferdam 1 During the second foundation clearing, a large deformation occurred due to the large external force of the cofferdam.
  • one end of the support beam 31 is connected to the interior of the cofferdam 1, and can be connected to the steel pipe pile structure 11 as required, and the other end is pressed against the steel casing 2, and through the limiting effect of the steel casing 2, the The position of the support beam 31 is limited so that the steel casing 2 can support the edge of the cofferdam 1 and ensure the structural stability of the cofferdam 1 during the second foundation clearing.
  • the steel pipe pile structure 11 is also provided with a ring beam structure 12, and the ring beam structure 12 includes a first layer ring beam 121, a second layer ring beam 122 and a third layer ring beam 123
  • the ring beams 121 of the first layer, the ring beams 122 of the second layer and the ring beams 123 of the third layer are arranged at intervals from top to bottom inside the steel pipe pile structure 11;
  • the cofferdam auxiliary support mechanism is arranged on the first layer Above the ring beam 121; the ring beam structure 12 is arranged, which can well ensure the supporting effect on the steel pipe pile structure 11 and ensure the stability of the overall structure of the cofferdam.
  • the above cofferdam auxiliary support mechanism can be used when the ring beam structure 12 is not provided in the cofferdam, so that the cofferdam auxiliary support mechanism acts as a ring beam to support the interior of the cofferdam, ensuring that the cofferdam structure as a whole The stability of the structure ensures the smooth progress of the second foundation clearing.
  • the cofferdam auxiliary support mechanism can be dismantled as required.
  • the steel pipe pile structure 11 is provided with a support bracket 5, where the support bracket 5 is a beam erection structure, mainly used to support the ring beam structure 12, to ensure that the ring beam structure 12 is in the surrounding area. Suspending inside the weir; realizing the internal support of the steel pipe pile structure 11; belongs to the prior art, and will not be repeated here.
  • the support bracket 5 is connected to one or the other of the steel pipe pile structures 11 A plurality of locking steel pipe piles 111; in the locking steel pipe piles 111 connected with supporting corbels 5, there is a hanging formwork concrete 1-1; the setting of the hanging formwork concrete 1-1 can increase the locking steel pipe piles
  • the structural strength of 111 ensures the stability of the support corbel 5 connected to the steel pipe pile structure 11.
  • the bottom of the steel pipe pile structure 11 is provided with a bottom-sealing concrete layer 4; the bottom-sealing concrete layer 4 can support and limit the bottom of the steel pipe pile structure 11 at the bottom, which increases the cofferdam to a certain extent. At the same time, it can cooperate with the ring beam to realize the internal support of the steel pipe pile structure 11, and it is also convenient for the subsequent setting of the cap and abutment.
  • the supporting beam 31 is provided with an auxiliary part 32 at one end close to the steel casing 2, and the auxiliary part 32 includes a supporting plate 321 arranged on the supporting beam 31, and one end of the supporting plate 321 is arranged on On the support beam 31, the other end fits with the steel casing 2; the setting of the auxiliary part 32 increases the contact area between the cofferdam auxiliary support mechanism 3 and the steel casing 2, thus ensuring the cofferdam auxiliary
  • the supporting mechanism 3 supports the cofferdam 1; specifically, the auxiliary part 32 includes a support plate 321 arranged on the support beam 31, and the setting of the support plate 321 is equivalent to increasing the lateral dimension of the end of the support beam 31 close to the steel casing 2, The contact area between the cofferdam auxiliary support mechanism 3 and the steel casing 2 is increased, thereby ensuring the stability of the cofferdam auxiliary support mechanism 3 supporting the cofferdam 1; at the same time, the support plate 321 is equivalent to a reinforcing rib, which can The structural strength at the end
  • the support beam 31 is provided with two auxiliary parts 32, and the two auxiliary parts 32 are symmetrically distributed at both ends of the support beam 31; the utility model adopts such an arrangement, which can ensure the The stability of the connection between the weir auxiliary support mechanism 3 and the steel casing 2 avoids the force offset exerted by the cofferdam auxiliary support mechanism 3 on the steel casing 2, so that the connection between the cofferdam auxiliary support mechanism 3 and the steel casing 2 The problem of relative sliding between them.
  • the support plate 321 is arranged obliquely; the central axis of the support beam 31 passes through the center point of the steel casing 2; the support beam 31 is perpendicular to the side of the cofferdam 1 connected to the support beam 31 wall; the utility model can make the cooperation of the support beam 31 and the support plate 321 equivalent to an arc-shaped claw clamped on the steel casing 2 through such an arrangement, which ensures that the auxiliary support mechanism 3 of the cofferdam is in good contact with the steel casing.
  • the stability of the connection between the casings 2 basically avoids the problem that the side of the cofferdam auxiliary support mechanism 3 slips off the steel casing 2 .
  • an arc-shaped groove 322 is provided in the bonding area between the support plate 321 and the steel casing 2; through the setting of the arc-shaped groove 322, it is required that the arc-shaped groove 322 contacts the steel casing 2
  • the curvature of the outer surface is the same.
  • This arrangement increases the contact area between the support plate 321 and the steel casing 2, and ensures the stability of the connection between the support plate 321 and the steel casing 2; at the same time, in order to ensure the support
  • an arc-shaped sinker structure is also provided at the end of the support beam 31 , so that the support beam 31 can fit and press against the outside of the steel casing 2 conveniently.
  • the arc groove 322 is provided with a support pad 323;
  • the support pad 323 can be a rubber pad or a protective pad made of anti-skid material, and one function of the support pad 323 is to prevent the support plate 321 from colliding with the Another effect of the rigid collision between the steel casings 2 is to increase the friction between the support plate 321 and the steel casings 2 to ensure the stability of the connection between the support plate 321 and the steel casing 2 .

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

本实用新型涉及围堰领域，具体来说是一种用于胶结卵石地质的锁扣钢管桩围堰，包括钢管桩结构，所述钢管桩结构内设有内支撑结构，所述钢管桩结构包括多个锁扣钢管桩，多个锁扣钢管桩依次连接围成一个矩形框结构；所述矩形框结构内部设有钢护筒；所述钢护筒连接有围堰辅助支撑机构；本实用新型公开了一种用于胶结卵石地质的锁扣钢管桩围堰，本实用新型通过围堰辅助支撑机构，可以实现围堰二次清基时对围堰***的支撑，避免围堰清基时因为受到基坑周边压力而发生较大形变，影响后续的正常使用。

Description

一种用于胶结卵石地质的锁扣钢管桩围堰 技术领域
本实用新型涉及围堰领域，具体来说是一种用于胶结卵石地质的锁扣钢管桩围堰。
背景技术
围堰：是指在水上工程建设中，为建造永久性水上设施，修建的临时性围护结构。
围堰种类较多，在水较深且流速较大的河流一般采用钢管桩围堰；现有钢管桩围堰在大多数环境下都可以顺利施工的，但是对于一些特殊河床，在施工时就会具有一定的问题。
特别是河床地质为胶结卵石地质的河流，因为胶结卵石地质的河床中砂卵石较多，在钢管桩进行插打时，不能顺利插打到位，而钢管桩插打不到位会影响围堰整体结构的稳定性，同时影响工程建设。
所以为了解决上述问题，会增加清基次数，一般是初始清基后，再次进行二次清基，继而保证钢管桩能够插打到位，使得围堰施工能够顺利。
但是在围堰二次清基时，因为围堰内外压力变化较大，围堰会在外部的挤压力的作用下发生较大形变，继而影响围堰的后续继续使用。
所以为了保证围堰二次清基时的稳定性，就需要对现有围堰结构进行优化设计。
实用新型内容
本实用新型的目的在于克服现有技术的不足，提供一种能够实现二次清基的新型围堰结构。
为了实现上述目的，本实用新型采用的技术方案为：
一种用于胶结卵石地质的锁扣钢管桩围堰，包括钢管桩结构，所述钢管桩结构包括多个锁扣钢管桩，多个锁扣钢管桩依次连接围成一个矩形框结构；所述矩形框结构内部设有钢护筒；所述钢护筒连接有围堰辅助支撑机构。
所述钢管桩结构内还设有圈梁结构，所述圈梁结构包括第一层圈梁、第二层圈梁以及第三层圈梁；所述第一层圈梁、第二层圈梁以及第三层圈梁在钢管桩结构内部由上至下依次间隔分布；所述围堰辅助支撑机构布置在第一层圈梁上方。
所述钢管桩结构内部设有支撑牛腿，所述支撑牛腿连接在钢管桩结构中的一个或者多个锁扣钢管桩上；在连接有支撑牛腿的锁扣钢管桩内设有吊模混凝土。
所述钢管桩结构底部设有封底混凝土层。
所述围堰辅助支撑机构包括支撑梁；所述支撑梁一端与钢管桩结构相连接，另一端与钢护筒相连接。
所述支撑梁靠近钢护筒一端设有辅助部，所述辅助部包括设置在支撑梁上的支撑板，所述支撑板一端设置在支撑梁上，另一端与钢护筒相贴合。
所述支撑梁上设有两个辅助部，两个所述辅助部对称分布在支撑梁的两端。
所述支撑板倾斜布置；所述支撑梁的中轴线经过钢护筒的圆心点；所述支撑梁垂直与支撑梁所连接的围堰侧壁。
所述支撑板与钢护筒贴合区域设有弧形槽。
所述弧形槽内设有支撑垫。
本实用新型的优点在于：
本实用新型公开了一种用于胶结卵石地质的锁扣钢管桩围堰，本实用新型 通过围堰辅助支撑机构，可以实现围堰二次清基时对围堰***的支撑，避免围堰清基时因为受到基坑周边压力而发生较大形变，影响后续的正常使用。
附图说明
下面对本实用新型说明书各幅附图表达的内容及图中的标记作简要说明：
图1为本实用新型的结构示意图。
图2为图1的局部放大图。
[根据细则26改正09.12.2022]　
图3为本实用新型中围堰辅助支撑机构的结构示意图。
图4为本实用新型施工时的主视图。
图5为本实用新型中设置支撑牛腿时的结构示意图。
上述图中的标记均为：
1、围堰，2、钢护筒，3、围堰辅助支撑机构，4、封底混凝土层，5、支撑牛腿。
具体实施方式
下面对照附图，通过对最优实施例的描述，对本实用新型的具体实施方式作进一步详细的说明。
一种用于胶结卵石地质的锁扣钢管桩围堰，包括钢管桩结构11，所述钢管桩结构11内设有圈梁结构12，所述钢管桩结构11包括多个锁扣钢管桩111，多个锁扣钢管桩111依次连接围成一个矩形框结构；所述矩形框结构内部设有钢护筒2；所述钢护筒2连接有围堰辅助支撑机构3；所述围堰辅助支撑机构包括支撑梁31；所述支撑梁31一端与围堰1内壁相连接，另一端与围堰1内部的钢护筒2相连接；本实用新型公开了一种用于胶结卵石地质的锁扣钢管桩111围堰，本实用新型通过围堰辅助支撑机构3的设置，也就是支撑梁31和辅助部32的配合使用，可以实现围堰1二次清基时对围堰1***的支撑，避免围堰清 基时因为受到基坑周边压力而发生较大形变，影响后续的正常使用。
具体，本实用新型公开的围堰辅助支撑机构3主要是包括支撑梁31，支撑梁31起到一个侧向支撑作用，通过配合钢护筒2实现对围堰内壁的支撑，从而保证围堰1二次清基时因为围堰外部受力较大而发生较大的形变。
具体使用时，支撑梁31一端连接在围堰1内部，可以根据需要连接在钢管桩结构11上，另一端抵压在钢护筒2上，通过钢护筒2的限位作用，从而实现支撑梁31位置的限定，从而使得钢护筒2可以对围堰1边缘进行支撑，保证围堰1在二次清基时的结构稳定性。
进一步的，在本发明中所述钢管桩结构11内还设有圈梁结构12，所述圈梁结构12包括第一层圈梁121、第二层圈梁122以及第三层圈梁123；所述第一层圈梁121、第二层圈梁122以及第三层圈梁123在钢管桩结构11内部由上至下依次间隔分布；所述围堰辅助支撑机构布置在第一层圈梁121上方；圈梁结构12设置，可以很好的保证对钢管桩结构11的支撑作用，保证围堰整体结构的稳定性性。
另外，在实际使用时，上述围堰辅助支撑机构可以在围堰内未设置圈梁结构12时进行使用，使得围堰辅助支撑机构充当圈梁实现对围堰内部的支撑，保证围堰结构整体结构的稳定性，保证二次清基的顺利进行，在圈梁结构12布置完成后，围堰辅助支撑机构可以根据需要进行拆除。
进一步的，在本发明中所述钢管桩结构11内部设有支撑牛腿5，这里支撑牛腿5就是一个架设梁结构，主要是用于支撑圈梁结构12，保证圈梁结构12在围堰内部的悬放；在实现对钢管桩结构11内部支撑；属于现有技术，这里不再赘述，另外，在本发明中所述支撑牛腿5连接在钢管桩结构11中的一个或者多个锁扣钢管桩111上；在连接有支撑牛腿5的锁扣钢管桩111内设有吊模混凝 土1-1；吊模混凝土1-1的设置，可以增加锁扣钢管桩111的结构强度，保证支撑牛腿5连接在钢管桩结构11上的稳定性。
进一步的，在本发明中所述钢管桩结构11底部设有封底混凝土层4；封底混凝土层4可以在底部对钢管桩结构11底部进行侧面支撑限位，在一定程度上增加了围堰的整体结构强度，同时可以配合圈梁实现钢管桩结构11的内部支撑，同时也方便后续承台和拱座的设置。
进一步的，在本实用新型中所述支撑梁31靠近钢护筒2一端设有辅助部32，所述辅助部32包括设置在支撑梁31上的支撑板321，所述支撑板321一端设置在支撑梁31上，另一端与钢护筒2相贴合；辅助部32的设置，增加了围堰辅助支撑机构3与钢护筒2之间的接触区域，从而很好的保证了围堰辅助支撑机构3对围堰1的支撑；具体，辅助部32包括设置在支撑梁31上的支撑板321，支撑板321的设置，相当于增加了支撑梁31靠近钢护筒2一端的横向尺寸，增加了围堰辅助支撑机构3与钢护筒2之间的接触面积，从而很好的保证了围堰辅助支撑机构3对围堰1支撑的稳定性；同时支撑板321相当于加强肋，可以很好的保证围堰辅助支撑机构3端部的结构强度。
进一步的，在本实用新型中所述支撑梁31上设有两个辅助部32，两个所述辅助部32对称分布在支撑梁31的两端；本实用新型采用这样的布置，可以保证围堰辅助支撑机构3与钢护筒2之间连接的稳定性，避免围堰辅助支撑机构3对钢护筒2之间施加的力偏移，使得围堰辅助支撑机构3与钢护筒2之间发生相对滑动的问题。
进一步的，在本实用新型中所述支撑板321倾斜布置；所述支撑梁31的中轴线经过钢护筒2的圆心点；所述支撑梁31垂直与支撑梁31所连接的围堰1侧壁；本实用新型通过这样的布置，可以使得支撑梁31和支撑板321的配合相 当于一个弧形卡爪卡接在钢护筒2上，很好的保证了围堰辅助支撑机构3与钢护筒2之间连接的稳定性，基本避免了围堰辅助支撑机构3侧面滑脱钢护筒2的问题。
进一步的，在本实用新型中所述支撑板321与钢护筒2贴合区域设有弧形槽322；通过弧形槽322的设置，并且要求弧形槽322与其接触的钢护筒2的外侧面弧度相同，这样的布置方式，增加了支撑板321与钢护筒2之间的接触面积，很好的保证了支撑板321与钢护筒2之间连接的稳定性；同时为了保证支撑梁31与钢护筒2之间的连接稳定性，在支撑梁31端部也设有弧形沉槽结构，这样设置的方式，可以方便支撑梁31贴合抵压在钢护筒2外侧。
进一步的，在本实用新型中所述弧形槽322内设有支撑垫323；支撑垫323可以是橡胶垫也可以是防滑材料制成的防护垫，支撑垫323一个作用是避免支撑板321与钢护筒2之间的刚性碰撞，另一个作用是增加支撑板321与钢护筒2只之间的摩擦力，保证支撑板321与钢护筒2之间的连接的稳定性。
显然本实用新型具体实现并不受上述方式的限制，只要采用了本实用新型的方法构思和技术方案进行的各种非实质性的改进，均在本实用新型的保护范围之内。

Claims (10)

  1. 一种用于胶结卵石地质的锁扣钢管桩围堰，其特征在于，包括钢管桩结构，所述钢管桩结构包括多个锁扣钢管桩，多个锁扣钢管桩依次连接围成一个矩形框结构；所述矩形框结构内部设有钢护筒；所述钢护筒连接有围堰辅助支撑机构。
  2. 根据权利要求1所述的一种用于胶结卵石地质的锁扣钢管桩围堰，其特征在于，所述钢管桩结构内还设有圈梁结构，所述圈梁结构包括第一层圈梁、第二层圈梁以及第三层圈梁；所述第一层圈梁、第二层圈梁以及第三层圈梁在钢管桩结构内部由上至下依次间隔分布；所述围堰辅助支撑机构布置在第一层圈梁上方。
  3. 根据权利要求2所述的一种用于胶结卵石地质的锁扣钢管桩围堰，其特征在于，所述钢管桩结构内部设有支撑牛腿，所述支撑牛腿连接在钢管桩结构中的一个或者多个锁扣钢管桩上；在连接有支撑牛腿的锁扣钢管桩内设有吊模混凝土。
  4. 根据权利要求1所述的一种用于胶结卵石地质的锁扣钢管桩围堰，其特征在于，所述钢管桩结构底部设有封底混凝土层。
  5. 根据权利要求1所述的一种用于胶结卵石地质的锁扣钢管桩围堰，其特征在于，所述围堰辅助支撑机构包括支撑梁；所述支撑梁一端与钢管桩结构相连接，另一端与钢护筒相连接。
  6. 根据权利要求5所述的一种用于胶结卵石地质的锁扣钢管桩围堰，其特征在于，所述支撑梁靠近钢护筒一端设有辅助部，所述辅助部包括设置在支撑梁上的支撑板，所述支撑板一端设置在支撑梁上，另一端与钢护筒相贴合。
  7. 根据权利要求6所述的一种用于胶结卵石地质的锁扣钢管桩围堰，其特征在于，所述支撑梁上设有两个辅助部，两个所述辅助部对称分布在支撑梁的两 端。
  8. 根据权利要求6所述的一种用于胶结卵石地质的锁扣钢管桩围堰，其特征在于，所述支撑板倾斜布置；所述支撑梁的中轴线经过钢护筒的圆心点；所述支撑梁垂直与支撑梁所连接的围堰侧壁。
  9. 根据权利要求6所述的一种用于胶结卵石地质的锁扣钢管桩围堰，其特征在于，所述支撑板与钢护筒贴合区域设有弧形槽。
  10. 根据权利要求9所述的一种用于胶结卵石地质的锁扣钢管桩围堰，其特征在于，所述弧形槽内设有支撑垫。
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