WO2022166164A1 - 一种现浇式超高性能混凝土(uhpc)组合屏蔽壳 - Google Patents

一种现浇式超高性能混凝土(uhpc)组合屏蔽壳 Download PDF

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WO2022166164A1
WO2022166164A1 PCT/CN2021/113735 CN2021113735W WO2022166164A1 WO 2022166164 A1 WO2022166164 A1 WO 2022166164A1 CN 2021113735 W CN2021113735 W CN 2021113735W WO 2022166164 A1 WO2022166164 A1 WO 2022166164A1
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layer
uhpc
cast
shielding shell
rigid
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PCT/CN2021/113735
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French (fr)
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程书剑
郑明光
李成
李韶平
豆燚
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上海核工程研究设计院有限公司
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Publication of WO2022166164A1 publication Critical patent/WO2022166164A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers

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  • the invention relates to a cast-in-place ultra-high-performance concrete (UHPC) combined shielding shell, in particular to a cast-in-situ ultra-high-performance concrete (UHPC)-reinforced concrete (RC)-back crack-proof panel combined shielding shell.
  • UHPC ultra-high-performance concrete
  • the thickness of the reinforced concrete (RC) shielding shell is larger and the construction period is long, while the thickness of the steel plate-concrete (SC) shielding wall is smaller, but the construction is difficult, and the construction and operation and maintenance costs are high.
  • a cast-in-place ultra-high performance concrete (UHPC) composite shielding shell is particularly required to solve the above-mentioned existing problems.
  • the purpose of the present invention is to provide a cast-in-place ultra-high performance concrete (UHPC) combined shielding shell, aiming at the deficiencies of the prior art, utilizing the excellent performance of UHPC, providing a strong anti-impact ability, reducing the wall thickness, greatly reducing the cost and construction difficulty.
  • UHPC ultra-high performance concrete
  • a cast-in-place ultra-high performance concrete (UHPC) composite shielding shell is characterized in that it comprises a UHPC layer, a rigid dismantling-free formwork, an RC layer and a back crack-proof panel; the rigid dismantling-free formwork is arranged on the UHPC layer and the RC layer, the RC layer is arranged between the UHPC layer and the back crack-proof panel; the RC layer and the UHPC layer are connected and fixed to each other by connecting pieces.
  • UHPC ultra-high performance concrete
  • studs are welded on the back crack-proof panel, and the back crack-proof panel is interconnected with the RC layer through the studs.
  • the UHPC layer is poured from ultra-high performance concrete and configured with structural steel bars.
  • the RC layer is formed by pouring ordinary concrete, and the RC layer is configured with RC layer main bars and RC layer tie bars.
  • the rigid dismantling-free formwork is arranged with staggered seams along the horizontal and vertical directions.
  • the rigid dismantling-free formwork is an industrial building rigid formwork.
  • the stud is fabricated from high-strength carbon steel or low-alloy pipe.
  • the RC layer main bars, the RC layer tie bars and the structural bars are hot-rolled ribbed bars for industrial buildings, including but not limited to HRB 400E bars.
  • the connector passes through the non-removable rigid template and is interconnected with the UHPC layer and the RC layer.
  • the connecting member includes but is not limited to tie bars and bolts.
  • the UHPC layer has higher strength and toughness, and is not easily broken and splashed under high-speed impact.
  • the anti-crack panel on the back avoids scabs on the back, and can better maintain the overall force performance of the impacted part. , thereby reducing the damage to the main structure caused by the impact of the projectile, and achieving the purpose of the present invention.
  • Fig. 1 is the structural representation of cast-in-place combined shielding shell of the present invention
  • FIG. 2 is a schematic view of the A-A section of FIG. 1 .
  • the cast-in-place combined shielding shell of the present invention includes a UHPC layer 1, a rigid dismantling-free formwork 2, an RC layer 3 and a back crack-proof panel 4; the rigid dismantling-free formwork 2 is arranged on the Between the UHPC layer 1 and the RC layer 3, it is used as the separation belt when the UHPC layer 1 and the RC layer 3 are cast-in-place during the construction; 3 and the UHPC layer 1 are connected to each other by connecting pieces 9 (ie, civil structure construction measures).
  • connecting pieces 9 ie, civil structure construction measures
  • the studs 5 are welded on the back crack-proof panel 4 for connecting the back crack-proof panel 5 and the RC layer 3; the studs 5 can be made of high-strength carbon steel or low-alloy steel.
  • the UHPC layer 1 is cast with ultra-high performance concrete, and the UHPC layer 1 is configured with structural steel bars 8 .
  • the RC layer 3 is cast with ordinary strength concrete, and the RC layer 3 is equipped with the RC layer main bar 6 and the RC layer tie bar 7 .
  • the main bars 6 of the RC layer, the tie bars 7 of the RC layer and the structural bars 8 are hot-rolled ribbed bars for industrial buildings, including but not limited to HRB 400E bars.
  • the rigid dismantling-free formwork 2 is arranged in a staggered manner along the horizontal and vertical directions, and a steel mesh rigid formwork may preferably be used.
  • the back crack-proof panel 4 can preferably be made of ordinary structural carbon steel plate.
  • the connecting piece 9 passes through the rigid non-removable formwork 2 to connect the UHPC layer 1 and the RC layer 3 .
  • the connecting piece 9 can be further welded or overlapped with the stud 5 or the back crack-proof panel 4; the connecting piece 9 includes but is not limited to steel bars and bolts, Preferably ribbed steel bars or ribbed bolts are used.
  • the cast-in-place combined shielding shell of the present invention is mainly used for the outer shielding shell of a nuclear power plant which has the requirement of resisting the impact of large-scale projectiles.
  • the UHPC outer temporary template is also used, and the UHPC outer temporary template is arranged on the outer side of the UHPC layer 1 .
  • the outer temporary formwork is a construction measure and needs to be removed later, and is not part of the present invention.
  • connection method of the present embodiment is as follows: install the back anti-crack panel 4 (including the studs 5) in place; install the main reinforcement 6 of the RC layer and the tie reinforcement 7 of the RC layer; install the rigid dismantling-free formwork 2; Part 9; then install the UHPC outer temporary formwork; then pour the UHPC layer 1 (ultra high performance concrete) and the RC layer 3 (ordinary concrete) respectively; finally remove the UHPC outer temporary formwork.
  • the structural form described in the present invention is usually used to make a cylindrical or square main shell, and a semi-conical, semi-ellipsoidal or other shaped dome is added according to engineering needs.
  • the thickness of the shielding shell can be greatly reduced, the space size of the building can be saved, and the project cost can be reduced.
  • the damage is usually limited to the UHPC layer and will not affect the main stress reinforcement of the RC layer. Compared with the traditional RC shielding shell or SC shielding shell, it is easier to repair.
  • each component of the shielding shell (UHPC, RC and back crack-proof panel) can be flexibly adjusted according to the shape and protection requirements of the building, and the engineering application value is wide.
  • the stiffness-density ratio can be flexibly adjusted, and then the floor response spectrum can be flexibly adjusted, which is of special significance to the design of nuclear power plants.
  • the UHPC layer and the RC layer are separated by rigid non-demolition formwork, which can be poured alternately at the same time, and the integrity is good.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Building Environments (AREA)

Abstract

本发明的目的在于公开一种现浇式超高性能混凝土(UHPC)组合屏蔽壳，它包括UHPC层、劲性免拆模板、RC层和背部防裂面板；所述劲性免拆模板设置于UHPC层与RC层之间，所述RC层设置于UHPC层与背部防裂面板之间；所述RC层与UHPC层之间通过连接件互相连接固定；与现有技术相比，UHPC层具有较高强度和韧性，在高速撞击下不易碎裂、飞溅，背部防裂面板避免了背部出痂片，可以较好地保持受撞击部位的整体受力性能，进而减少了飞射物撞击对主体结构的破坏，实现本发明的目的。

Description

一种现浇式超高性能混凝土(UHPC)组合屏蔽壳 技术领域
本发明涉及一种现浇式超高性能混凝土(UHPC)组合屏蔽壳，特别涉及一种现浇式超高性能混凝土(UHPC)-钢筋混凝土(RC)-背部防裂面板组合屏蔽壳。
背景技术
为应对大型飞射物的威胁，有特殊防护要求的建筑物一般在表面采用屏蔽壳来保护主体结构。以核电厂为例，为保护反应堆不受外部事件(大型飞射物撞击、龙卷风等)影响，需在反应堆外设置安全壳(即屏蔽壳)。常见的核电厂反应堆外屏蔽壳包括：传统的钢筋混凝土(RC)屏蔽壳和近年大规模应用的钢板-混凝土(SC)屏蔽墙。为达到同样的保护效果，钢筋混凝土(RC)屏蔽壳厚度较大，建造周期长，而钢板-混凝土(SC)屏蔽墙厚度较小，但施工难度大，且建造和运维成本高。
因此，特别需要一种现浇式超高性能混凝土(UHPC)组合屏蔽壳，以解决上述现有存在的问题。
发明内容
本发明的目的在于提供一种现浇式超高性能混凝土(UHPC)组合屏蔽壳，针对现有技术的不足，利用UHPC的优异性能，提供强大的抗撞击能力，减小墙厚，大幅度降低造价和施工难度。
本发明所解决的技术问题可以采用以下技术方案来实现：
一种现浇式超高性能混凝土(UHPC)组合屏蔽壳，其特征在于，它包括UHPC层、劲性免拆模板、RC层和背部防裂面板；所述劲性免拆模板设置于UHPC层与RC层之间，所述RC层设置于UHPC层与背部防裂面板之间；所述RC层与UHPC层之间通过连接件互相连接固定。
在本发明的一个实施例中，所述背部防裂面板上焊接有栓钉，所述背部防裂面板通过栓钉与所述RC层互相连接。
在本发明的一个实施例中，所述UHPC层为超高性能混凝土浇筑而成并配置构造钢筋。
在本发明的一个实施例中，所述RC层为普通混凝土浇筑而成，所述RC层配置有RC层主筋和RC层拉筋。
在本发明的一个实施例中，所述劲性免拆模板沿着水平和竖直方向互相错缝布置。
在本发明的一个实施例中，所述劲性免拆模板为工业建筑劲性模板。
在本发明的一个实施例中，所述栓钉为高强度碳素钢或低合金管加工制作而成。
在本发明的一个实施例中，所述RC层主筋、RC层拉筋和构造钢筋为工业建筑热轧带肋钢筋，包括但不限于HRB 400E钢筋。
在本发明的一个实施例中，所述连接件穿过所述免拆劲性模板并与所述UHPC层和RC层互相连接。
在本发明的一个实施例中，所述连接件包括但不限于拉筋和螺栓。
本发明的现浇式组合屏蔽壳，若遭受较高速度的飞射物撞击，遭受撞击部位的UHPC层和RC层、背部防裂面板协同工作。与现有技术相比，UHPC层具有较高强度和韧性，在高速撞击下不易碎裂、飞溅，背部防裂面板避免了背部出痂片，可以较好地保持受撞击部位的整体受力性能，进而减少了飞射物撞击对主体结构的破坏，实现本发明的目的。
本发明的特点可参阅本案图式及以下较好实施方式的详细说明而获得清楚地了解。
附图说明
图1为本发明的现浇式组合屏蔽壳的结构示意图；
图2为图1的A-A剖面的示意图。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体图示，进一步阐述本发明。
实施例
如图1和图2所示，本发明的现浇式组合屏蔽壳，它包括UHPC层1、劲性免拆模板2、RC层3和背部防裂面板4；劲性免拆模板2设置于UHPC层1与RC层3之间，在施工中作为UHPC层1和RC层3现浇时的分隔带；RC层3设置于劲性免拆模板2与背部防裂面板4之间；RC层3与UHPC层1之间通过连接件9(即土建结构构造措施)互相连接。
栓钉5焊接于背部防裂面板4上，用于连接背部防裂面板5与RC层3；栓钉5可采用高强度碳素钢或低合金钢加工制作而成。
UHPC层1采用超高性能混凝土浇筑而成，UHPC层1配置有构造钢筋8。
RC层3采用普通强度混凝土浇筑而成，RC层3配置有RC层主筋6和RC层拉筋7。RC层主筋6、RC层拉筋7和构造钢筋8采用工业建筑热轧带肋钢筋，包括但不限于HRB 400E钢筋。
劲性免拆模板2沿着水平和竖直方向互相错缝布置，可优选地采用钢丝网劲性模板。
背部防裂面板4可优选地采用普通结构碳钢板。
连接件9穿过劲性免拆模板2，连接UHPC层1与RC层3。优选地，为进一步增加整体性，在施工条件满足的情况下，可进一步将连接件9与栓钉5或背部防裂面板4进行焊接或搭接；连接件9包括但不限于钢筋和螺栓，优选地采用带肋钢筋或带肋螺栓。
本发明的现浇式组合屏蔽壳，主要用于具有抗大型飞射物撞击需求的核电厂外层屏蔽壳。
具体实施时，还使用了UHPC外侧临时模板，UHPC外侧临时模板设置于UHPC 层1的外侧。外侧临时模板属于施工措施，后期需拆除，不是本发明的一部分。
本实施例的连接方法如下：将背部防裂面板4(含栓钉5)安装就位；安装RC层主筋6和RC层拉筋7；安装劲性免拆模板2；安装构造钢筋8和连接件9；再安装UHPC外侧临时模板；再分别浇筑UHPC层1(超高性能混凝土)和RC层3(普通混凝土)；最后拆除UHPC外侧临时模板。
本实施例具体使用时，通常使用本发明所述的结构形式，制作成圆柱型或方形主壳体，根据工程需要加半锥形、半椭球形或其它形状的穹顶。
本发明的现浇式组合屏蔽壳具有以下有益效果：
1、与传统的钢筋混凝土(RC)屏蔽壳相比，为防护飞射物撞击，可大幅度减小屏蔽壳的厚度，节省建筑物空间尺寸，降低工程造价。
2、与传统的钢板-混凝土(SC)屏蔽壳相比，在有防护需求一侧以UHPC替代钢板，可减小施工难度，总体造价显著减低，且在运维阶段养护成本大幅降低(SC屏蔽壳钢板需要经常性清理和涂漆维护)。
3、破坏通常局限于UHPC层，不会影响RC层主受力钢筋，与传统的RC屏蔽壳或SC屏蔽壳相比，更便于修复。
4、可根据建筑物形状和防护需求，灵活调整屏蔽壳各组成部分(UHPC、RC和背部防裂面板)的尺寸和外形，工程应用价值广泛。特别地，通过调整各部分厚度，可灵活地调整刚度-密度比，进而灵活调整楼面反应谱，对核电厂设计具有特殊的意义。
5、不仅适用于建筑物外部的飞射物防护需求，也可将UHPC和背板在屏蔽壳的位置互换，即可用于建筑物内部的飞射物防护需求。
6、UHPC层和RC层采用劲性免拆模板分隔，可同时交替浇筑，整体性好。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内，本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (10)

  1. 一种现浇式超高性能混凝土(UHPC)组合屏蔽壳，其特征在于，它包括UHPC层、劲性免拆模板、RC层和背部防裂面板；所述劲性免拆模板设置于UHPC层与RC层之间，所述RC层设置于UHPC层与背部防裂面板之间；所述RC层与UHPC层之间通过连接件互相连接固定。
  2. 如权利要求1所述的现浇式组合屏蔽壳，其特征在于，所述背部防裂面板上焊接有栓钉，所述背部防裂面板通过栓钉与所述RC层互相连接。
  3. 如权利要求1所述的现浇式组合屏蔽壳，其特征在于，所述UHPC层为超高性能混凝土浇筑而成并配置构造钢筋。
  4. 如权利要求1所述的现浇式组合屏蔽壳，其特征在于，所述RC层为普通混凝土浇筑而成，所述RC层配置有RC层主筋和RC层拉筋。
  5. 如权利要求1所述的现浇式组合屏蔽壳，其特征在于，所述劲性免拆模板沿着水平和竖直方向互相错缝布置。
  6. 如权利要求1所述的现浇式组合屏蔽壳，其特征在于，所述劲性免拆模板为工业建筑劲性模板。
  7. 如权利要求1所述的现浇式组合屏蔽壳，其特征在于，所述栓钉为高强度碳素钢或低合金管加工制作而成。
  8. 如权利要求1所述的现浇式组合屏蔽壳，其特征在于，所述RC层主筋、RC层拉筋和构造钢筋为工业建筑热轧带肋钢筋，包括但不限于HRB 400E钢筋。
  9. 如权利要求1所述的现浇式组合屏蔽壳，其特征在于，所述连接件穿过所述免拆劲性模板并与所述UHPC层和RC层互相连接。
  10. 如权利要求1所述的现浇式组合屏蔽壳，其特征在于，所述连接件包括但不限于拉筋和螺栓。
PCT/CN2021/113735 2021-02-05 2021-08-20 一种现浇式超高性能混凝土(uhpc)组合屏蔽壳 WO2022166164A1 (zh)

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