CN205636751U - Assembled forming structures system towards secret building of multilayer - Google Patents

Assembled forming structures system towards secret building of multilayer Download PDF

Info

Publication number
CN205636751U
CN205636751U CN201620334120.XU CN201620334120U CN205636751U CN 205636751 U CN205636751 U CN 205636751U CN 201620334120 U CN201620334120 U CN 201620334120U CN 205636751 U CN205636751 U CN 205636751U
Authority
CN
China
Prior art keywords
support
piles
basement
pile
prefabricated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201620334120.XU
Other languages
Chinese (zh)
Inventor
李连祥
李先军
刘兵
王兴政
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University
Original Assignee
Shandong University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong University filed Critical Shandong University
Priority to CN201620334120.XU priority Critical patent/CN205636751U/en
Application granted granted Critical
Publication of CN205636751U publication Critical patent/CN205636751U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Foundations (AREA)

Abstract

本实用新型公开了面向多层地下建筑的装配式定型结构体系,包括构成地下室结构的地下室外墙和地下室楼板,包括两排基坑支护用的支护桩,两排支护桩错位布桩,支护桩从距离地下室外墙最近的一排支护桩到另一排支护桩呈逐渐升高的阶梯型支护,地下室外墙与距离地下室外墙最近的一排支护桩之间设有外伸支撑,支护桩的顶部设有冠梁,两排的支护桩通过冠梁相互连接。本实用新型基坑采用永久支护结构的基础上,实现地下室部分采用装配式结构,现场施工方便快捷,结构质量易于保证,可有效提升生产效率,较大程度的减少建筑垃圾;可实现支护结构的永久化与地下结构的装配化有机结合,实现建筑结构设计与支护结构设计有机统一。

The utility model discloses a prefabricated stereotyped structure system for multi-storey underground buildings, including basement outer walls and basement floor slabs constituting the basement structure, including two rows of support piles for foundation pit support, and two rows of support piles with misplaced piles. , the supporting piles form a gradually rising stepped support from the row of supporting piles closest to the basement outer wall to the other row of supporting piles, between the outer wall of the basement and the row of supporting piles closest to the outer wall of the basement Outrigger supports are provided, and crown beams are arranged on the top of the support piles, and two rows of support piles are connected to each other through the crown beams. On the basis of the permanent support structure for the foundation pit of the utility model, the basement part adopts an assembled structure, the on-site construction is convenient and fast, the structural quality is easy to guarantee, the production efficiency can be effectively improved, and construction waste can be reduced to a large extent; the support can be realized The organic combination of the permanent structure and the assembly of the underground structure realizes the organic unity of the architectural structure design and the support structure design.

Description

面向多层地下建筑的装配式定型结构体系Prefabricated stereotyped structure system for multi-storey underground buildings

技术领域technical field

本实用新型涉及地下工程,具体地说是面向多层地下建筑的装配式定型结构体系。The utility model relates to an underground engineering, in particular to an assembly-type stereotyped structure system for multi-storey underground buildings.

背景技术Background technique

在建筑结构领域,装配式钢筋混凝土结构成为建筑结构发展的重要方向之一,相比于现浇混凝土结构,装配式结构具有结构质量易于保证,现场组装方便快捷,可有效提升生产效率,较大程度的减少建筑垃圾,具有较好的经济环境效益。In the field of building structures, prefabricated reinforced concrete structures have become one of the important directions for the development of building structures. Compared with cast-in-place concrete structures, prefabricated structures have the advantages of easy guarantee of structural quality, convenient and quick on-site assembly, and can effectively improve production efficiency. The reduction of construction waste to a certain extent has good economic and environmental benefits.

在基坑工程尤其是深基坑工程中,基于支护桩的挡墙式支护结构为常见的深基坑支护形式之一,传统建筑结构设计中,基坑支护结构通常视为临时性施工措施,只在地下结构施工阶段发挥作用,基坑回填之后便废弃地下,这对建筑材料和社会资源造成极大的浪费,随着我国建筑工业化迅猛发展,支护桩在深基坑支护工程中得到广泛应用,但如果能对这些桩进行进一步地利用,则能大大节约能源,此外,现有地下室建造较为复杂,工序繁多,不能有效利用基坑支护体系,而且现在地上面积又大大缩小,有待对地下空间进行充分利用,因此需要对能提供施工速度且节约能源的地下室的构建进行更为深层次的研究。In foundation pit engineering, especially deep foundation pit engineering, the retaining wall support structure based on support piles is one of the common forms of deep foundation pit support. In traditional building structure design, the foundation pit support structure is usually regarded as temporary The permanent construction measures only play a role in the construction stage of the underground structure. After the foundation pit is backfilled, the ground will be abandoned. This will cause a great waste of building materials and social resources. However, if these piles can be further utilized, energy can be greatly saved. In addition, the construction of the existing basement is relatively complicated, and there are many procedures, so the foundation pit support system cannot be effectively used, and the area above the ground is small. It is greatly reduced and the underground space needs to be fully utilized. Therefore, it is necessary to conduct more in-depth research on the construction of basements that can improve construction speed and save energy.

实用新型内容Utility model content

针对上述问题,为了解决现有技术的不足,特设置一种面向多层地下建筑的装配式定型结构体系,即基坑边坡采用基于双排预制桩的阶梯型支护,并通过支撑构件将支护结构与主体结构相结合,在此基础上实现主体建筑地下结构的装配化施工,将支护结构永久化和地下结构装配化相结合,形成装配式永久支护结构体系,有助于推动城市地下空间朝着集约化与可持续化发展。In view of the above problems, in order to solve the shortcomings of the existing technology, a prefabricated stereotyped structure system for multi-storey underground buildings is specially set up, that is, the slope of the foundation pit adopts stepped support based on double rows of prefabricated piles, and the The support structure is combined with the main structure. On this basis, the assembly construction of the underground structure of the main building is realized. The permanent support structure and the assembly of the underground structure are combined to form a prefabricated permanent support structure system, which helps to promote Urban underground space is developing toward intensification and sustainability.

面向多层地下建筑的装配式定型结构体系,包括地下室结构的地下室外墙、地下室楼板和两排基坑支护桩,两排基坑支护桩错位布桩,支护桩从内侧支护桩到外侧支护桩呈逐渐升高的阶梯型支护,地下室外墙与支护桩之间设有外伸支撑,支护桩的顶部设有冠梁,两排的支护桩通过冠梁相互连接;因基坑的支护桩与外伸支撑连接配合地下室结构形成地下永久性支护结构体系,而支护桩作为地下室支撑的一部分,不仅实现了支护桩的利用,而且使得地下室支护更加牢固;同时,阶梯形支护是考虑到边坡控制效果而设置的方式。The prefabricated stereotyped structural system for multi-storey underground buildings, including the basement outer wall, basement floor and two rows of foundation pit support piles of the basement structure. The two rows of foundation pit support piles are misplaced, and the support piles are supported from the inside The support piles on the outer side are stepped support that gradually rises. There is an outstretched support between the basement wall and the support piles. The top of the support piles is provided with a crown beam. Connection; because the support piles of the foundation pit are connected with the outrigger supports to form a permanent underground support structure system with the basement structure, and the support piles are used as a part of the basement support, which not only realizes the utilization of the support piles, but also makes the basement support It is more firm; at the same time, the stepped support is set in consideration of the slope control effect.

当采用两排阶梯型支护时,高度较低的第二排支护桩桩顶标高定位负一层地下室楼板标高,第二排支护桩的桩顶通过冠梁连接,第二排支护桩冠梁外侧与第一排支护桩桩身浇筑为一体,前后两排支护桩通过第二排支护桩的冠梁相互连接。When two rows of stepped support are used, the pile top elevation of the second row of supporting piles with a lower height is positioned at the basement floor elevation of the negative first floor, and the pile tops of the second row of supporting piles are connected by crown beams, and the second row of supporting piles The outside of the pile crown beam and the first row of supporting piles are poured into one body, and the front and rear rows of supporting piles are connected to each other through the crown beam of the second row of supporting piles.

此外,阶梯型的支护,形成上半部分为单排桩支护、下半部分为双排桩支护的复合型支护结构,在基坑支护阶段,后排桩顶部冠梁为前排桩桩身提供一支点,有效减小前排支护桩桩身弯矩,充分利用下半部分双排桩支护结构刚度较大的特点,减小支护结构水平位移,增加支护结构的整体稳定性。In addition, the stepped support forms a composite support structure in which the upper part is supported by single-row piles and the lower part is supported by double-row piles. The row of piles provides a point to effectively reduce the bending moment of the front row of supporting piles, make full use of the rigidity of the lower half of the double-row pile support structure, reduce the horizontal displacement of the support structure, and increase the strength of the support structure. overall stability.

进一步地,为了实现集约化生产,外侧支护桩顶部的冠梁包括多段拼接段,每段冠梁拼接段端部设有便于相邻冠梁拼接用的预埋件,内侧支护桩顶部冠梁为现浇件,预埋件可以是固定于冠梁侧壁的钢板或者是冠梁底部的钢板,冠梁在拼接后,钢板预埋件通过螺栓与冠梁连接实现紧固。Further, in order to realize intensive production, the crown beam at the top of the outer support pile includes multiple splicing sections, and the end of each crown beam splicing section is provided with embedded parts for splicing adjacent crown beams, and the crown beam at the top of the inner support pile is Cast-in-place parts and embedded parts can be steel plates fixed on the side wall of the crown beam or the steel plate at the bottom of the crown beam. After the crown beam is spliced, the steel plate embedded parts are connected to the crown beam by bolts to realize fastening.

进一步地,支护桩采用混凝土预制桩,为预应力管桩或预应力方桩或预应力板桩。Further, the supporting piles are prefabricated concrete piles, which are prestressed pipe piles, prestressed square piles or prestressed sheet piles.

进一步地,地下室外墙及地下室楼板均采用预制板;因地下室外墙及地下室楼板采用预制板,整个结构不仅不会减弱地下室的使用寿命,而且大大缩短了地下室的施工时间。Furthermore, the basement exterior walls and basement floors are all made of prefabricated panels; because the basement exterior walls and basement floors are made of prefabricated panels, the entire structure will not reduce the service life of the basement, and greatly shorten the construction time of the basement.

进一步地,低位置的支护桩顶部的冠梁与相邻的支护桩桩身浇筑为一体。Further, the crown beam at the top of the support pile at the low position is poured into one piece with the adjacent support pile body.

进一步地,外侧支护桩顶部的冠梁与基坑外侧混凝土施工道路浇筑为一体,通过施工道路自身重度以及与土体之间的摩擦对第一排支护桩顶进行锚固,以减小桩顶位移。Furthermore, the crown beam on the top of the outer support piles is integrated with the concrete construction road outside the foundation pit, and the top of the first row of support piles is anchored by the weight of the construction road itself and the friction with the soil to reduce the pile load. top displacement.

进一步地,所述外伸支撑为预制素混凝土支撑,素混凝土支撑位于基础底板平面内,支撑一端与地下室底板连接,一端与支护桩桩身浇筑连接,也可以在桩身上设置腰梁,腰梁及冠梁的设置,使得原本主要由地下室楼板支撑的力均匀分布到支护桩上,而且多排支护桩的设置,更是有效避免了应力集中造成结构的破坏;素混凝土支撑仅承受轴向压力,所以可在施工肥槽清理干净后通过素混凝土直接浇筑成型,支撑可以做梁状,也可以做成板状。Further, the outrigger support is a prefabricated plain concrete support, and the plain concrete support is located in the plane of the foundation floor. One end of the support is connected to the basement floor, and the other end is connected to the pile body of the support pile by pouring. It is also possible to set a waist beam on the pile body. The setting of beams and crown beams makes the force mainly supported by the basement floor evenly distributed to the supporting piles, and the setting of multiple rows of supporting piles effectively avoids the damage of the structure caused by stress concentration; the plain concrete support only bears Axial pressure, so it can be directly poured with plain concrete after the construction fertilizer tank is cleaned up, and the support can be made into a beam shape or a plate shape.

进一步地,所述外伸支撑为预制钢筋混凝土支撑,外伸支撑一端与地下室楼板连接,一端通过钢板或钢筋预埋件与内侧支护桩顶部的冠梁或者是支护桩的桩身连接;总而言之,外侧支护桩顶部冠梁为钢筋混凝土预制冠梁,也可采用钢筋混凝土现浇冠梁;内侧支护桩顶部冠梁为钢筋混凝土现浇冠梁,也可先采用钢筋混凝土预制桩拼接,然后通过在外侧浇筑混凝土与外侧支护桩连接。Further, the outrigger is a prefabricated reinforced concrete support, one end of the outrigger is connected to the basement floor, and one end is connected to the crown beam at the top of the inner support pile or the pile body of the support pile through a steel plate or a pre-embedded steel bar; All in all, the crown beam at the top of the outer support pile is a reinforced concrete prefabricated crown beam, and a reinforced concrete cast-in-place crown beam can also be used; the top crown beam of the inner support pile is a reinforced concrete cast-in-place crown beam, which can also be spliced with reinforced concrete prefabricated piles first. , and then connected with the outer support piles by pouring concrete on the outer side.

进一步地,所述冠梁开有用于支护桩穿过的通孔,便于更好的将预制支护桩与冠梁连接为一个整体。Further, the crown beam is provided with a through hole for the passage of the support piles, so as to better connect the prefabricated support piles and the crown beam as a whole.

进一步地,还包括用于在支护桩施工时对支护桩定位的定位模具,采用H型钢焊接成型。Further, it also includes a positioning mold for positioning the support pile during the construction of the support pile, which is welded and formed by H-shaped steel.

本实用新型中永久支护结构通过将基坑支护结构与地下建筑主体结构相结合,将支护结构转变为主体结构的一部分永久发挥作用,可充分发挥支护结构自身刚度,有效减小地下室外墙厚度,一方面能有效降低工程造价,另一方面也使得地下室结构装配化施工成为可能,有助于促进城市地下空间建设朝着集约化放下发展。In the utility model, the permanent support structure combines the support structure of the foundation pit with the main structure of the underground building, and transforms the support structure into a part of the main structure to play a permanent role, which can fully exert the rigidity of the support structure itself and effectively reduce the size of the basement. The thickness of the outer wall, on the one hand, can effectively reduce the project cost, on the other hand, it also makes it possible to assemble the basement structure, which helps to promote the development of urban underground space construction towards intensification.

此外,对基坑顶部各构件的拼接部位进行防水处理,如相邻的冠梁的接触缝隙采用砂浆抹平止水。In addition, waterproof treatment shall be carried out on the splicing parts of the various components on the top of the foundation pit, such as the contact gap between adjacent crown beams shall be smoothed and water-stopped with mortar.

结构体系的施工方法,具体施工步骤如下:The construction method of the structural system, the specific construction steps are as follows:

步骤1):沿基坑边沿外侧施工第一排支护桩,并施工桩顶冠梁和基坑外侧施工道路,形成第一阶支护;Step 1): Construct the first row of support piles along the outer edge of the foundation pit, and construct the pile crown beam and the construction road outside the foundation pit to form the first-order support;

步骤2):沿基坑边沿内侧施工第二排支护桩,第二排支护桩与第一排支护桩错位布桩,第二排支护桩桩顶标高低于第一排支护桩且与负一层地下室楼面板高度持平;Step 2): Construct the second row of supporting piles along the inner side of the edge of the foundation pit, the second row of supporting piles and the first row of supporting piles are dislocated, and the pile top elevation of the second row of supporting piles is lower than that of the first row of supporting piles The piles are at the same height as the floor slab of the basement on the first floor;

步骤3):进行第一次基坑开挖,开挖至第二排支护桩桩顶标杆位置;Step 3): Excavate the foundation pit for the first time, and excavate to the position of the pole top of the second row of supporting piles;

步骤4):施工第二排桩的桩顶现浇冠梁3,形成第二阶支护;Step 4): constructing the cast-in-place crown beam 3 on the pile top of the second row of piles to form a second-order support;

步骤5):进行第二次基坑开挖,开挖至坑底设计标高,两排桩之间的土体不做开挖;Step 5): Excavate the foundation pit for the second time, and excavate to the design elevation of the pit bottom, and do not excavate the soil between the two rows of piles;

步骤6):施工主体建筑基础结构,浇筑地下室底层底板,在地下室底板7与第二排支护桩之间浇筑素混凝土支撑10;Step 6): constructing the main building foundation structure, pouring the bottom floor of the basement, and pouring plain concrete supports 10 between the basement floor 7 and the second row of support piles;

步骤7):进行负二层地下室外墙板预制与安装;Step 7): Carry out the prefabrication and installation of the outdoor wall panels of the basement on the second negative floor;

步骤8):进行负一层地下室楼面板和地下室外墙板的预制与安装以及地下室梁柱构件的浇筑,在负一层地下室楼面板与第二排支护桩桩顶冠梁之间安装预制支撑;Step 8): Carry out prefabrication and installation of the basement floor slab and basement outdoor wall panels and pouring of basement beam and column components, and install prefabrication between the basement floor slab of the negative first floor and the crown beams of the second row of supporting piles support;

步骤9):施共地下室外墙防水保温层;Step 9): apply the waterproof and thermal insulation layer of the basement exterior wall;

步骤10):土体回填并分层夯实。Step 10): The soil is backfilled and compacted in layers.

本实用新型的有益效果是:The beneficial effects of the utility model are:

(1)本实用新型中,基坑采用基于双排预制桩的阶梯型支护与分级开挖,具有建筑工业化程度高、现场施工方便快捷、边坡变形控制效果好等特点。(1) In the utility model, the foundation pit adopts stepped support and graded excavation based on double-row prefabricated piles, which has the characteristics of high degree of building industrialization, convenient and fast on-site construction, and good slope deformation control effect.

(2)本实用新型中,基坑采用基于双排预制桩分级支护的永久支护结构,通过将基坑支护结构与地下建筑主体结构相结合,将支护结构转变为主体结构的一部分永久发挥作用,可充分发挥支护结构自身刚度,有效减小地下室外墙厚度,一方面能有效降低工程造价,另一方面也使得地下室结构装配化施工成为可能,有助于促进城市地下空间建设朝着集约化放下发展。(2) In the utility model, the foundation pit adopts a permanent support structure based on double-row prefabricated pile graded support. By combining the support structure of the foundation pit with the main structure of the underground building, the support structure is transformed into a part of the main structure Playing a permanent role can give full play to the rigidity of the support structure itself and effectively reduce the thickness of the basement exterior wall. On the one hand, it can effectively reduce the project cost. On the other hand, it also makes the assembly construction of the basement structure possible, which helps to promote the construction of urban underground space. Let go of development towards intensification.

(3)本实用新型中,在基坑采用永久支护结构的基础上,实现地下室部分采用装配式结构,相比于现浇混凝土结构,现场施工方便快捷,结构质量易于保证,可有效提升生产效率,较大程度的减少建筑垃圾,具有较好的经济环境效益。(3) In this utility model, on the basis of the permanent support structure for the foundation pit, the basement part adopts an assembled structure. Compared with the cast-in-place concrete structure, the on-site construction is convenient and fast, and the structural quality is easy to ensure, which can effectively improve production. Efficiency, reduce construction waste to a greater extent, and have good economic and environmental benefits.

(4)本实用新型中的体系可实现支护结构的永久化与地下结构的装配化有机结合,实现建筑结构设计与支护结构设计有机统一,能有效推动我国的建筑工业化,推动城市地下空间朝着集约化与可持续化发展。(4) The system in the utility model can realize the organic combination of the permanent support structure and the assembly of the underground structure, realize the organic unity of the architectural structure design and the support structure design, and can effectively promote the industrialization of construction in my country and the urban underground space Towards intensification and sustainable development.

附图说明Description of drawings

图1是本实用新型基于两层地下室结构的示意图。Fig. 1 is the schematic diagram of the utility model based on two-layer basement structure.

图2是本实用新型在第一排支护桩冠梁位置处的水平剖面示意图。Fig. 2 is a schematic horizontal cross-sectional view of the utility model at the position of the crown and beam of the first row of supporting piles.

图3是本实用新型在第二排支护桩冠梁位置处的水平剖面示意图。Fig. 3 is a schematic horizontal cross-sectional view of the utility model at the position of the crown and beam of the second row of supporting piles.

图4是本实用新型中第一排支护桩与冠梁装配位置的侧视图。Fig. 4 is a side view of the assembly position of the first row of support piles and the crown beam in the utility model.

图5是本实用新型中第一排支护桩与冠梁装配位置的水平剖面图。Fig. 5 is a horizontal sectional view of the first row of support piles and crown beam assembly position in the utility model.

图6是本实用新型支护桩定位模具的示意图。Fig. 6 is a schematic diagram of the supporting pile positioning mold of the present invention.

图7是本实用新型基于三层地下室结构的示意图。Fig. 7 is a schematic diagram of the utility model based on a three-story basement structure.

图中各个标号含义:1-支护桩、2-预制冠梁、3-现浇冠梁、4-基坑外侧混凝土施工道路、5-地下室外墙、6-地下室楼板、7-地下室底板、8-地下室外墙横梁、9-预制支撑、10-素混凝土支撑、11-预埋件、12-防护杆安装孔、13-凸起、14-防护栏杆、15-支护桩定位模具。The meaning of each label in the figure: 1-support pile, 2-prefabricated crown beam, 3-cast-in-place crown beam, 4-concrete construction road outside the foundation pit, 5-basement exterior wall, 6-basement floor, 7-basement floor, 8-Basement external wall beams, 9-Prefabricated support, 10-Plain concrete support, 11-Embedded parts, 12-Protective pole installation holes, 13-Protrusion, 14-Protective railing, 15-Support pile positioning mold.

具体实施方式detailed description

下面结合说明书附图和具体实施例对本实用新型作进一步的描述:The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments of the description:

实施例1Example 1

如图1所示,该工程实例的地下结构为两层地下室,地下结构组成包括预制地下室外墙5,地下室楼板6,地下室底板7,地下室外墙横梁8等主要构件。As shown in Figure 1, the underground structure of this project example is a two-story basement. The underground structure consists of prefabricated basement exterior wall 5, basement floor slab 6, basement floor slab 7, basement exterior wall beam 8 and other main components.

图1所示,该工程实例的基坑支护结构为双排预应力管桩阶梯型支护结构,主要包括支护桩1、预制冠梁2、现浇冠梁3等主要构件。As shown in Figure 1, the foundation pit support structure of this engineering example is a double-row prestressed pipe pile ladder-type support structure, which mainly includes support piles 1, prefabricated crown beams 2, and cast-in-place crown beams 3 and other main components.

图1所示,该工程实例中第一排支护桩为预应力管桩,桩顶预制冠梁2与基坑外侧混凝土施工道路4连接,通过施工道路自身重度以及与土体之间的摩擦对第一排支护桩顶进行锚固,以减小桩顶位移,施工道路宽度满足规范要求。As shown in Figure 1, the first row of support piles in this project example are prestressed pipe piles, and the prefabricated crown beam 2 on the top of the piles is connected to the concrete construction road 4 outside the foundation pit. Anchor the top of the first row of supporting piles to reduce the displacement of the pile top, and the width of the construction road meets the specification requirements.

图2、图4和图5所示,相邻排的支护桩通过冠梁相互连接,外侧第一排支护桩顶部冠梁2为预制构件,每个预制段的两端分别设有凸起13和凹槽,并设有钢板预埋件11,如图4和图5所示,相邻的预制冠梁2通过凸起13凹槽进行拼接,并通过钢板预埋件11进行螺栓固定;冠梁顶端预留有防护杆安装孔12,可通过安装孔进行防护栏杆14的安装。As shown in Fig. 2, Fig. 4 and Fig. 5, the supporting piles in adjacent rows are connected to each other through crown beams. 13 and grooves, and equipped with steel plate embedded parts 11, as shown in Figure 4 and Figure 5, the adjacent prefabricated crown beams 2 are spliced through the raised 13 grooves, and bolted through the steel plate embedded parts 11 The top of the crown beam is reserved with a protective bar installation hole 12, and the installation of the protective railing 14 can be carried out through the installation hole.

图1所示,该工程实例中第二排支护桩为预应力管桩,桩顶冠梁标高为第一次基坑开挖深度标高,约等于负一层地下室楼板标高,在第二排支护桩与地下室外墙5之间设置两道外伸支撑,所述主体结构外伸支撑为钢筋混凝土现浇支撑,外伸支撑一端通钢板预埋件与第二排支护桩桩身或顶部现浇冠梁3连接,另一端通过钢筋或者钢板预埋件与地下室外墙横梁8连接后,再与地下室楼板6连接,所述基础底板外伸支撑为素混凝土支撑,素混凝土支撑位于基础底板平面内,支撑一端与地下室底板7浇筑连接,一端与支护桩1桩身浇筑连接。As shown in Figure 1, the second row of supporting piles in this project example is prestressed pipe piles, and the elevation of the crown beam at the top of the piles is the elevation of the first foundation pit excavation depth, which is approximately equal to the elevation of the basement floor of the negative first floor. Two outriggers are set between the support piles and the basement exterior wall 5. The outriggers of the main structure are reinforced concrete cast-in-place supports. The cast-in-place crown beam 3 is connected, and the other end is connected to the basement external wall beam 8 through steel bars or steel plate embedded parts, and then connected to the basement floor 6. The outstretched support of the foundation floor is plain concrete support, and the plain concrete support is located In the plane, one end of the support is poured and connected with the basement floor 7, and the other end is connected with the support pile 1 pile body by pouring.

图1所示,该工程实例中主体建筑包含两层地下室,地下室外墙5和地下室楼板6均为预制构件,地下室立柱和横梁均采用现浇构件,相互之间采用后浇整体式连接。As shown in Figure 1, the main building in this project example includes two basements. The basement exterior wall 5 and the basement floor 6 are prefabricated components.

图3所示,该工程实例中前后两排支护桩错位布桩,第二排支护桩冠梁外侧与第一排支护桩桩身浇筑为一体,前后两排支护桩通过第二排支护桩的冠梁相互连接。As shown in Figure 3, in this project example, the two rows of supporting piles in the front and rear are dislocated. The crown beams of row-supported piles are connected to each other.

图1所示,在地下结构施工结束后对地下室外墙和支护桩之间进行土体回填,回填土体要分层夯实。As shown in Figure 1, after the construction of the underground structure is completed, the soil between the basement exterior wall and the support piles is backfilled, and the backfilled soil should be compacted in layers.

结构体系的施工方法,具体施工步骤如下:The construction method of the structural system, the specific construction steps are as follows:

步骤1):沿基坑边沿外侧施工第一排支护桩,并施工桩顶预制冠梁2和基坑外侧施工道路4,形成第一阶支护;Step 1): Construct the first row of support piles along the outer edge of the foundation pit, and construct the prefabricated crown beam 2 on the pile top and the construction road 4 outside the foundation pit to form the first-order support;

步骤2):沿基坑边沿内侧施工第二排支护桩,第二排支护桩与第一排支护桩错位布桩;第二排支护桩桩顶标高低于第一排支护桩且与负一层地下室楼板6高度持平;Step 2): Construct the second row of supporting piles along the inner side of the edge of the foundation pit, the second row of supporting piles and the first row of supporting piles are dislocated; piles and are on the same level as the height of the basement floor 6 on the first floor;

步骤3):进行第一次基坑开挖,开挖至第二排支护桩桩顶标杆位置;Step 3): Excavate the foundation pit for the first time, and excavate to the position of the pole top of the second row of supporting piles;

步骤4):施工第二排支护桩顶现浇冠梁3,形成第二阶支护;Step 4): constructing the cast-in-place crown beam 3 on the top of the second row of supporting piles to form the second-order support;

步骤5):进行第二次基坑开挖,开挖至坑底设计标高,两排桩之间的土体不做开挖;Step 5): Excavate the foundation pit for the second time, and excavate to the design elevation of the pit bottom, and do not excavate the soil between the two rows of piles;

步骤6):浇筑地下室底板7,在地下室底板7与第二排支护桩之间浇筑素混凝土支撑10;Step 6): pouring the basement floor 7, pouring plain concrete support 10 between the basement floor 7 and the second row of support piles;

步骤7):施工底层地下室主体结构,包括地下室外墙5、地下室楼板6的预制与安装,地下室梁柱构件的浇筑;在底层地下室楼板6与第二排支护桩之间安装预制支撑9;Step 7): constructing the main structure of the basement, including the prefabrication and installation of the basement exterior wall 5 and the basement floor 6, and the pouring of the basement beam and column components; installing the prefabricated support 9 between the basement floor 6 and the second row of support piles;

步骤8):依次进行更上一层地下室结构施工,包括地下室外墙5、地下室楼板6的预制与安装,地下室梁、柱及支撑构件的浇筑,直至地下部分主体结构施工结束;Step 8): Carry out the construction of the upper basement structure in sequence, including the prefabrication and installation of the basement exterior wall 5 and the basement floor 6, the pouring of the basement beams, columns and support members, until the construction of the main structure of the underground part is completed;

步骤9):施做地下室外墙5防水保温层;Step 9): apply a waterproof insulation layer for the basement exterior wall 5;

步骤10):基坑土体回填并分层夯实。Step 10): The foundation pit soil is backfilled and compacted in layers.

支护桩1施工过程,根据支护桩1尺寸及布桩位置,预先定制支护桩1施工定位模具,通过模具对桩孔进行精确定位,并利用现有工程措施保证支护桩1垂直度,保证支护桩1的施工精度。During the construction process of the support pile 1, according to the size of the support pile 1 and the position of the pile, the construction positioning mold of the support pile 1 is customized in advance, the pile hole is accurately positioned through the mold, and the verticality of the support pile 1 is guaranteed by using existing engineering measures , to ensure the construction accuracy of the support pile 1.

所述定位模具根据具体工程量身定制,如图6所示,采用H型钢焊接成型并可重复使用,由于模具长度限制,其施工顺序为先按要求固定模具,在模具所在范围内施工支护桩1,施工结束后将模具拆卸,并移至下一段施工位置再次固定,在模具新固定位置依次施工下一组支护桩1,根据支护桩施工顺序依次向前推进施工,施工结束后对模具进行回收。The positioning mold is tailored according to the specific project. As shown in Figure 6, it is formed by welding H-shaped steel and can be reused. Due to the limitation of the length of the mold, the construction sequence is to first fix the mold according to the requirements, and construct the support within the range where the mold is located. For pile 1, after the construction is completed, the mold is disassembled and moved to the next construction position to be fixed again, and the next set of support piles 1 is constructed in sequence at the new fixed position of the mold, and the construction is advanced in sequence according to the construction sequence of the support piles. Recycle the mould.

实施例2Example 2

本实施例与实施例1的区别是:The difference between this embodiment and embodiment 1 is:

所述外伸支撑为预制钢筋混凝土支撑,外伸支撑一端通过预埋件与设于支护桩的腰梁连接,一端通过预埋件与地下室外墙横梁连接从而实现与地下室楼板的连接,因腰梁与冠梁的设置,使得原本主要由地下室楼板支撑的力均匀分布到支护桩上,而且多排支护桩的设置,更是有效避免了应力集中造成结构的破坏。The outrigger support is a prefabricated reinforced concrete support. One end of the outrigger support is connected to the waist beam provided on the support pile through the embedded part, and the other end is connected to the beam of the outer wall of the basement through the embedded part to realize the connection with the basement floor. The setting of the waist beam and crown beam makes the force mainly supported by the basement floor evenly distributed to the support piles, and the arrangement of multiple rows of support piles effectively avoids the damage of the structure caused by stress concentration.

实施例3Example 3

如图7所示,该工程实例的地下结构为三层地下室,其具体结构与施工工序与与实施例1相仿,基坑支护结构均为基于预制桩1的阶梯式分层支护,地下室外墙5和地下室楼板6均为预制板,地下室梁柱构件均为混凝土现浇构件。As shown in Figure 7, the underground structure of this engineering example is a three-story basement, and its specific structure and construction procedures are similar to those in Example 1. Both the exterior wall 5 and the basement floor slab 6 are prefabricated panels, and the basement beam and column components are all cast-in-place concrete components.

如图3所示,与实施例1相比,实施例3的不同之处在于其地下结构为三层地下室,支护结构和地下室外墙之间共设有三道支撑,支撑与各层屋楼面板持平,最底层的外伸支撑依然是素混凝土支撑10,上两层的外伸支撑均为预制支撑9。As shown in Figure 3, compared with Embodiment 1, the difference of Embodiment 3 is that its underground structure is a three-story basement, and there are three supports between the supporting structure and the outer wall of the basement. The panels are flat, the outrigger support at the bottom is still plain concrete support 10, and the outrigger supports on the upper two floors are all prefabricated supports 9.

以上所述仅为本实用新型的较佳实施例而已,并不是本实用新型的全部实施例,不用以限制本实用新型,凡在本实用新型的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本实用新型的保护范围之内。The above is only a preferred embodiment of the utility model, not all embodiments of the utility model, and is not intended to limit the utility model. Any modifications made within the spirit and principles of the utility model are equivalent to Replacement, improvement, etc. should all be included in the protection scope of the present utility model.

除说明书所述技术特征外,其余技术特征均为本领域技术人员已知技术,为了突出本实用新型的创新特点,上述技术特征在此不再赘述。Except for the technical features described in the specification, the rest of the technical features are technologies known to those skilled in the art. In order to highlight the innovative features of the utility model, the above technical features will not be repeated here.

Claims (10)

1.面向多层地下建筑的装配式定型结构体系,其特征在于,包括地下室结构的地下室外墙、地下室楼板和两排基坑支护桩,两排基坑支护桩错位布桩,支护桩从内侧支护桩到外侧支护桩呈逐渐升高的阶梯型支护,地下室外墙与支护桩之间设有外伸支撑,支护桩的顶部设有冠梁,两排的支护桩通过冠梁相互连接;相邻排的支护桩通过冠梁相互连接,外侧第一排支护桩顶部冠梁为预制构件,每个预制段的两端分别设有凸起和凹槽,相邻的预制冠梁通过凸起凹槽进行拼接。 1. The prefabricated stereotyped structural system for multi-storey underground buildings is characterized in that it includes the basement outer wall of the basement structure, the basement floor and two rows of foundation pit support piles, and the two rows of foundation pit support piles are misplaced. The piles form a gradually rising stepped support from the inner support pile to the outer support pile. There is an outstretched support between the outer wall of the basement and the support pile. The top of the support pile is provided with a crown beam. The protective piles are connected to each other through crown beams; adjacent rows of support piles are connected to each other through crown beams, and the top crown beams of the first row of support piles on the outer side are prefabricated components, and the two ends of each prefabricated section are respectively provided with protrusions and grooves , adjacent prefabricated crown beams are spliced through raised grooves. 2.如权利要求1所述的结构体系,其特征在于,外侧支护桩顶部的冠梁包括多段拼接段,每段冠梁拼接段端部设有便于相邻冠梁拼接用的预埋件,内侧支护桩顶部冠梁为现浇件。 2. The structural system as claimed in claim 1, characterized in that the crown beam at the top of the outer support pile comprises a multi-section splicing section, and the end of each crown beam splicing section is provided with an embedded part convenient for splicing adjacent crown beams, and the inner side The crown beam at the top of the support pile is cast-in-place. 3.如权利要求1所述的结构体系,其特征在于,支护桩采用混凝土预制桩,为预应力管桩或预应力方桩或预应力板桩。 3. The structural system according to claim 1, wherein the supporting piles are prefabricated concrete piles, which are prestressed pipe piles, prestressed square piles or prestressed sheet piles. 4.如权利要求1所述的结构体系,其特征在于,地下室外墙及地下室楼板均采用预制板。 4. The structural system according to claim 1, characterized in that, both the exterior wall of the basement and the floor slab of the basement are prefabricated panels. 5.如权利要求1所述的结构体系,其特征在于,低位置的支护桩顶部的冠梁与相邻的支护桩桩身浇筑为一体。 5. The structural system according to claim 1, characterized in that the crown beam at the top of the support pile at the low position is poured integrally with the adjacent support pile body. 6.如权利要求1所述的结构体系,其特征在于,外侧支护桩顶部的冠梁与基坑外侧混凝土施工道路浇筑为一体。 6. The structural system according to claim 1, characterized in that the crown beam at the top of the outer support pile is integrated with the concrete construction road outside the foundation pit. 7.如权利要求1所述的结构体系,其特征在于,所述外伸支撑为预制素混凝土支撑,素混凝土支撑位于基础底板平面内,支撑一端与地下室底板连接,一端与支护桩桩身浇筑连接。 7. The structural system according to claim 1, wherein the outrigger support is a prefabricated plain concrete support, the plain concrete support is located in the plane of the foundation floor, one end of the support is connected to the basement floor, and the other end is connected to the supporting pile body Pour connections. 8.如权利要求1所述的结构体系,其特征在于,所述外伸支撑为预制钢筋混凝土支撑,外伸支撑一端与地下室楼板连接,一端通过钢板或钢筋预埋件与内侧支护桩顶部的冠梁或者是支护桩的桩身连接。 8. The structural system according to claim 1, wherein the outrigger is a prefabricated reinforced concrete support, one end of the outrigger is connected to the basement floor, and the other end is connected to the top of the inner support pile through a steel plate or pre-embedded steel bar The crown beam or the pile body connection of the support pile. 9.如权利要求1所述的结构体系,其特征在于,所述冠梁开有用于固定支护桩桩顶的孔槽。 9. The structural system according to claim 1, wherein the crown beam is provided with a hole for fixing and supporting the pile top of the retaining pile. 10.如权利要求1所述的结构体系,其特征在于,还包括用于在支护桩施工时对支护桩定位的定位模具。 10. The structural system according to claim 1, further comprising a positioning mold for positioning the support piles during construction of the support piles.
CN201620334120.XU 2016-04-20 2016-04-20 Assembled forming structures system towards secret building of multilayer Expired - Fee Related CN205636751U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620334120.XU CN205636751U (en) 2016-04-20 2016-04-20 Assembled forming structures system towards secret building of multilayer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620334120.XU CN205636751U (en) 2016-04-20 2016-04-20 Assembled forming structures system towards secret building of multilayer

Publications (1)

Publication Number Publication Date
CN205636751U true CN205636751U (en) 2016-10-12

Family

ID=57062529

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620334120.XU Expired - Fee Related CN205636751U (en) 2016-04-20 2016-04-20 Assembled forming structures system towards secret building of multilayer

Country Status (1)

Country Link
CN (1) CN205636751U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106638610A (en) * 2017-03-13 2017-05-10 中国建筑第七工程局有限公司 Large-difference staggered connection structure and construction method thereof
CN108385693A (en) * 2018-02-27 2018-08-10 中科院广州化灌工程有限公司 A kind of waiting for anchor rod support method and support system for basement supporting by stages
CN114135154A (en) * 2021-12-24 2022-03-04 刘兵 Building construction foundation ditch guardrail

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106638610A (en) * 2017-03-13 2017-05-10 中国建筑第七工程局有限公司 Large-difference staggered connection structure and construction method thereof
CN108385693A (en) * 2018-02-27 2018-08-10 中科院广州化灌工程有限公司 A kind of waiting for anchor rod support method and support system for basement supporting by stages
CN108385693B (en) * 2018-02-27 2023-10-03 中科院广州化灌工程有限公司 Equal-generation anchor bolt supporting method and system for staged basement supporting
CN114135154A (en) * 2021-12-24 2022-03-04 刘兵 Building construction foundation ditch guardrail

Similar Documents

Publication Publication Date Title
CN105735325B (en) A kind of intensive permanent support assembled basement structure system and construction method
CN101914925B (en) Basement by using optimized composite prefabricated arch wall as external wall
CN103046755B (en) The construction method of the light steel integrated house of pastoral area assembling
CN102635118B (en) Square steel pipe concrete supporting structure for foundation pit support
CN105862900B (en) Prefabricated garage structural system based on prefabricated pile and method
CN201546227U (en) Steel support beam for supporting foundation pit bracing piling wall and basement structure outer wall
CN101775844A (en) Connecting joint of ring beam of steel core concrete column used for topdown construction method foundation pit engineering
CN204590038U (en) A kind of permanent foundation pit supporting construction
CN104179249A (en) Assembled composite-structure earthquake-resistant wall and assembly method thereof
CN110397278A (en) A method for synchronous construction of above-ground buildings and underground structures
CN112575789A (en) Diagonal space truss foundation pit inner support system
CN113338451A (en) Assembly type structure adaptive to deformed steel pipe column and construction method thereof
CN205636751U (en) Assembled forming structures system towards secret building of multilayer
CN111622383B (en) A self-resetting concrete frame structure steel plate energy-consuming filling wall and its assembling method
CN105735352A (en) Fabricated structure based on foundation pit retaining pile for basement exterior walls, and construction method
CN108708486A (en) A kind of self-heat preserving assembly type overlapped shear wall structure and its construction method
CN105821903B (en) Frame type combined structure pipe gallery
CN205576936U (en) Fabricated construction system towards secret building of individual layer
CN205636750U (en) Permanent supporting assembled cellar structure system of intensification
CN206189586U (en) Assembled steel concrete truss column supporting structural system
CN205502069U (en) Basement outer wall fabricated construction based on excavation supporting stake
CN204919932U (en) Assemble integral non -reinforced concrete ribbed floor
CN209040148U (en) Concrete slat-fabricated foundations that can withstand dynamic loads
CN109267578B (en) Inclined plane plain concrete structure and construction method thereof
CN115387378B (en) Semi-column-free assembled station based on superposed side walls and floor simple supports and method thereof

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20161012

CF01 Termination of patent right due to non-payment of annual fee