CN108193667A - A kind of water proof type spelling dress list three Room thin wall-type continuous underground wall structure of case and construction method - Google Patents
A kind of water proof type spelling dress list three Room thin wall-type continuous underground wall structure of case and construction method Download PDFInfo
- Publication number
- CN108193667A CN108193667A CN201810017610.0A CN201810017610A CN108193667A CN 108193667 A CN108193667 A CN 108193667A CN 201810017610 A CN201810017610 A CN 201810017610A CN 108193667 A CN108193667 A CN 108193667A
- Authority
- CN
- China
- Prior art keywords
- wall unit
- diaphragm wall
- wall
- diaphragm
- unit
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 24
- 239000002131 composite material Substances 0.000 claims description 6
- 238000007596 consolidation process Methods 0.000 claims 1
- 208000002925 dental caries Diseases 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 238000003032 molecular docking Methods 0.000 abstract description 3
- 239000004567 concrete Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- 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
- E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (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)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
本发明公开了一种防水型全拼装单箱三室薄壁式地下连续墙结构，由若干连续墙单元和预应力钢筋混凝土柱沿竖向、水平方向拼装而成，连续墙单元为单箱三室空腔结构，连续墙单元的两端设有用于彼此对接的阴接头和阳接头，连续墙单元接口处的两侧均设有防水槽，连续墙结构竖向分为上中下三段，上段连续墙单元上部和下部均设有预埋钢筋，中段连续墙单元上部设有预留孔洞，下部设有预埋钢筋，下段连续墙单元上部设有预留孔洞，本发明通过在施工现场槽段内装配预制地下连续墙构件，能够形成整体刚度好、抗变形和抗渗漏性能强的地下连续墙结构，本发明施工可控性强、质量好、效率高、周期短，节约材料，工程造价低，工程实施效果良好。
The invention discloses a waterproof fully-assembled single-box three-chamber thin-walled underground diaphragm wall structure, which is composed of several diaphragm wall units and prestressed reinforced concrete columns assembled in vertical and horizontal directions, and the diaphragm wall unit is a single-box three-chamber space. cavity structure, the two ends of the continuous wall unit are provided with female and male joints for docking with each other, waterproof grooves are provided on both sides of the interface of the continuous wall unit, and the continuous wall structure is divided into three sections: upper, middle and lower. Both the upper part and the lower part of the wall unit are equipped with pre-embedded steel bars, the upper part of the middle section of the continuous wall unit is provided with reserved holes, the lower part is provided with pre-embedded steel bars, and the upper part of the lower section of the continuous wall unit is provided with reserved holes. Assembling prefabricated underground diaphragm wall components can form an underground diaphragm wall structure with good overall rigidity, strong deformation resistance and anti-leakage performance. The invention has strong construction controllability, good quality, high efficiency, short cycle, material saving, and low engineering cost , the project implementation effect is good.
Description
技术领域technical field
本发明涉及地下工程技术领域，尤其涉及一种防水型全拼装单箱三室薄壁式地下连续墙结构及施工方法。The invention relates to the technical field of underground engineering, in particular to a waterproof fully assembled single-box three-chamber thin-walled underground continuous wall structure and a construction method.
背景技术Background technique
21世纪以来，随着社会经济的快速发展，我国迎来了地铁空前的建设高潮，截止2016年底，中国内地在建轨道交通的城市已增至53个，共计4400km。而地下连续墙作为城市地铁主体基坑围护的挡土墙常用形式，以其强度可靠、刚度大、整体性好，得到了广泛应用。Since the 21st century, with the rapid development of social economy, my country has ushered in an unprecedented upsurge in the construction of subways. By the end of 2016, the number of cities under construction in mainland China has increased to 53, with a total length of 4400km. As a common form of retaining wall for the main foundation pit enclosure of urban subways, the underground diaphragm wall has been widely used because of its reliable strength, high rigidity, and good integrity.
目前地下连续墙主要有以下两种：现浇地下连续墙：这种墙体施工步骤为导墙施工、钢筋笼及泥浆制作、成槽放样施工、吊放钢筋笼、灌注混凝土。但是，此种地下连续墙的技术特点导致墙体的施工质量受地层影响大，在复杂地层中，通常有缩壁、坍塌、墙体漏筋、墙幅厚度不足及“鼓肚”等质量问题，可能导致地下连续墙出现接缝渗漏，易出现管涌、流砂等现象。夹泥沙的地下连续墙在基坑开挖时出现落水、侧向变形大等质量问题。同时浇筑混凝土量过多，混凝土硬化时间太慢，工期太长。预制地下连续墙：墙体单元在工厂预制，导墙成槽后将预制地下连续墙体吊放入槽段内，通过拼接完成连续墙作业。这种墙对成槽的质量要求低，避免了墙体质量的缺陷。但是在墙体连接处易出现地下水渗漏的问题，为了避免渗漏问题往往会提高施工成本。同时，墙体单元与墙体单元之间的纵向即高度方向连接无法实现，可能会导致整个墙体的抗剪强度和纵向承载力不足，无法承担土体侧压力，也无法支承建筑物上部结构的纵向压力。并且预制连续墙不方便运输，特别是在槽段内吊放和装配过程中，由于预制地下连续墙自身重量较大，给施工增加了很大的难度。因此，急需开发一种整体刚度好、抗变形和抗渗漏性能强的地下连续墙结构。At present, there are mainly two types of underground diaphragm walls: cast-in-place underground diaphragm wall: the construction steps of this wall are guide wall construction, steel cage and mud production, trough lofting construction, hanging steel cage, and pouring concrete. However, due to the technical characteristics of this type of underground diaphragm wall, the construction quality of the wall is greatly affected by the stratum. In complex strata, there are usually quality problems such as wall shrinkage, collapse, wall leakage, insufficient wall thickness, and "bulging belly". , may lead to joint leakage in the underground diaphragm wall, prone to piping, quicksand and other phenomena. During the excavation of the foundation pit, the underground diaphragm wall with silt has quality problems such as water falling and large lateral deformation. At the same time, the amount of poured concrete is too much, the concrete hardening time is too slow, and the construction period is too long. Prefabricated underground diaphragm wall: The wall unit is prefabricated in the factory. After the guide wall is formed into a groove, the prefabricated underground diaphragm wall is hoisted into the groove section, and the diaphragm wall operation is completed by splicing. This kind of wall has low requirements on the quality of the grooves, which avoids defects in the quality of the wall. However, the problem of groundwater leakage is prone to occur at the joint of the wall. In order to avoid the leakage problem, the construction cost will often be increased. At the same time, the vertical connection between the wall units, that is, the height direction, cannot be realized, which may lead to insufficient shear strength and longitudinal bearing capacity of the entire wall, unable to bear the lateral pressure of the soil, and unable to support the superstructure of the building the vertical pressure. Moreover, the prefabricated diaphragm wall is inconvenient to transport, especially in the process of hoisting and assembling in the trough section, because the prefabricated underground diaphragm wall itself has a large weight, which adds great difficulty to the construction. Therefore, it is urgent to develop an underground diaphragm wall structure with good overall rigidity, strong deformation resistance and anti-leakage performance.
此外，预应力技术在现代各种建筑结构中都得到有效的应用，特别是在混凝土结构中的应用最为广泛。它的主要原理是在结构负载以前，利用人为的途径使结构内部行成应力，在结构负载的时候，出现的应力与该应力相抵消，进而起到延缓结构裂缝发生的作用。该技术可以充分发挥钢筋和混凝土的性能，不仅节约钢筋和混凝土使用量，而且还能提高混凝土结构的使用寿命。若将预应力技术应用于地下连续墙的建造中，将会使地下连续墙墙体的整体质量得到显著提高。In addition, prestressing technology has been effectively applied in various modern building structures, especially in concrete structures. Its main principle is to use artificial means to create stress inside the structure before the structure is loaded. When the structure is loaded, the stress that appears will offset the stress, thereby delaying the occurrence of structural cracks. This technology can give full play to the properties of steel bars and concrete, not only saving the amount of steel bars and concrete used, but also improving the service life of concrete structures. If the prestressing technology is applied to the construction of the underground diaphragm wall, the overall quality of the underground diaphragm wall will be significantly improved.
有鉴于此，特提出本发明。In view of this, the present invention is proposed.
发明内容Contents of the invention
本发明的目的是提供一种防水型全拼装单箱三室薄壁式地下连续墙结构及施工方法，通过工厂化预制内部设有贯通空腔的连续墙单元，并采用先张法制作预应力钢筋混凝土柱，在施工现场实现整个墙体的拼装，并将预应力钢筋混凝土柱贯穿于连续墙墙体的整个空腔。本发明施工可控性强，质量好，施工周期短，效率高，节约材料，工程造价低，工程实施效果好。此外，本发明的连续墙单元之间通过阴阳接口和钢筋连接，并通过膨胀防水条和钢板复合止水条固定，使地下连续墙的整体刚度、抗变形能力和抗渗漏性能得到显著提高。The purpose of the present invention is to provide a waterproof fully-assembled single box three-chamber thin-walled underground diaphragm wall structure and construction method, through industrial prefabrication, the interior is provided with a diaphragm through the cavity, and the pre-tensioning method is used to make prestressed steel bars The concrete column realizes the assembly of the entire wall at the construction site, and the prestressed reinforced concrete column runs through the entire cavity of the continuous wall. The invention has strong construction controllability, good quality, short construction period, high efficiency, material saving, low engineering cost and good engineering implementation effect. In addition, the diaphragm wall units of the present invention are connected by male and female joints and steel bars, and fixed by expansion waterproof strips and steel plate composite water stop strips, so that the overall rigidity, deformation resistance and leakage resistance of the underground diaphragm wall are significantly improved.
为了实现上述目的，本发明提供的一种防水型全拼装单箱三室薄壁式地下连续墙结构，由若干连续墙单元和预应力钢筋混凝土柱沿竖向、水平方向拼装而成，其特征在于，所述连续墙单元为单箱三室空腔结构，所述连续墙单元的两端设有用于彼此对接的阴接头和阳接头，所述连续墙单元接口处的两侧均设有防水槽，所述连续墙结构竖向分为上中下三段，所述上段连续墙单元上部和下部均设有预埋钢筋，所述中段连续墙单元上部设有预留孔洞，下部设有预埋钢筋，所述下段连续墙单元上部设有预留孔洞。In order to achieve the above object, the present invention provides a waterproof fully assembled single-box three-chamber thin-walled underground diaphragm wall structure, which is assembled from several diaphragm wall units and prestressed reinforced concrete columns along the vertical and horizontal directions, and is characterized in that , the continuous wall unit is a single-box three-chamber cavity structure, the two ends of the continuous wall unit are provided with female joints and male joints for docking with each other, and waterproof grooves are provided on both sides of the interface of the continuous wall unit, The diaphragm wall structure is vertically divided into upper, middle and lower sections, the upper and lower parts of the upper diaphragm wall unit are provided with pre-embedded steel bars, the upper part of the middle diaphragm wall unit is provided with reserved holes, and the lower part is provided with pre-embedded steel bars , the upper part of the continuous wall unit of the lower section is provided with a reserved hole.
优选地，所述连续墙单元长为6m、宽为1m、高为10m。Preferably, the continuous wall unit has a length of 6m, a width of 1m, and a height of 10m.
优选地，所述连续墙单元沿长度方向每隔2米设置一个呈上下贯通的空腔，空腔尺寸为150cm*50cm*1000cm，每个连续墙单元设置3个空腔。Preferably, the continuous wall unit is provided with a vertically penetrating cavity every 2 meters along the length direction, the cavity size is 150cm*50cm*1000cm, and each continuous wall unit is provided with 3 cavities.
优选地，所述中段连续墙单元和下段连续墙单元的竖向上部，沿长度方向每侧设置6个预留孔洞，两侧共计设置12个，沿宽度方向在中间每条楞上设置2个预留孔洞，共计设置4个。Preferably, on the vertical upper part of the continuous wall unit in the middle section and the continuous wall unit in the lower section, 6 reserved holes are set on each side along the length direction, a total of 12 holes are set on both sides, and 2 holes are set on each flute in the middle along the width direction. A total of 4 holes are reserved.
优选地，所述上段连续墙单元和中段连续墙单元的竖向下部，对照预留孔洞沿长度方向每侧设置6组预埋钢筋，两侧共计设置12组，对照预留孔洞沿宽度方向在中间每条楞上设置2组预埋钢筋，共计设置4组。Preferably, at the vertical lower part of the upper section of the diaphragm wall unit and the middle section of the diaphragm wall unit, 6 sets of pre-embedded steel bars are arranged on each side along the length direction in comparison with the reserved holes, and 12 groups are arranged in total on both sides. Set 2 sets of pre-embedded steel bars on each flute in the middle, and set 4 sets in total.
优选地，所述预留孔洞为圆形。Preferably, the reserved hole is circular.
优选地，所述预留孔洞的内壁设有套管。Preferably, the inner wall of the reserved hole is provided with a sleeve.
优选地，所述预应力钢筋混凝土柱采用先张法制得。Preferably, the prestressed reinforced concrete column is made by pretensioning.
优选地，所述预应力钢筋混凝土柱的尺寸为150cm*50cm*3000cm。Preferably, the size of the prestressed reinforced concrete column is 150cm*50cm*3000cm.
本发明还提供了一种防水型全拼装单箱三室薄壁式地下连续墙的施工方法，其特征在于，包括以下步骤：The present invention also provides a construction method for a waterproof fully assembled single-box three-chamber thin-walled underground continuous wall, which is characterized in that it includes the following steps:
(1)制备若干连续墙单元和预应力钢筋混凝土柱；(1) Prepare some diaphragm wall units and prestressed reinforced concrete columns;
(2)开挖沟槽并浇筑地下连续墙导墙；(2) Excavate trenches and pour guide walls for underground diaphragm walls;
(3)对开挖好的沟槽进行成槽施工；(3) Carry out trenching construction to the excavated trench;
(4)完成第一段槽段内的预制连续墙单元的拼装工作。在槽段内，首先吊入第一块连续墙单元，然后在竖向方向，吊入第二块连续墙单元，在水平接触面上，通过预留孔洞和预埋钢筋使两段连续墙单元镶接，并通过套管使两者固定，为了保证接触面的防水性能，进一步增强连接处的黏结性，在接触面处设置钢板复合止水条；(4) Complete the assembly work of the prefabricated continuous wall units in the first section of the groove section. In the groove section, the first continuous wall unit is hoisted first, and then the second continuous wall unit is hoisted in the vertical direction. On the horizontal contact surface, holes and pre-embedded steel bars are used to make the two continuous wall units Inlaid, and the two are fixed through the sleeve. In order to ensure the waterproof performance of the contact surface and further enhance the cohesiveness of the connection, a steel plate composite water-stop strip is installed at the contact surface;
(5)在竖向预制地下连续墙整体装配完成后，清洗空腔内部的杂物；(5) After the overall assembly of the vertical prefabricated underground diaphragm wall is completed, clean the sundries inside the cavity;
(6)在空腔内吊装贯穿整个空腔的预应力钢筋混凝土柱，此时完成第一槽段的施工作业；(6) hoist the prestressed reinforced concrete column that runs through the entire cavity in the cavity, and complete the construction work of the first groove section at this time;
(7)完成第一槽段内地下连续墙后，在预留的防水槽中，安装膨胀防水条；(7) After completing the underground diaphragm wall in the first groove section, install expansion waterproof strips in the reserved waterproof groove;
(8)开挖第二段槽段，吊入该槽段内的第一块连续墙单元，通过连续墙单元两侧的阴阳接口，与第一槽段内第一块吊入的连续墙单元镶接就位，通过膨胀防水条使两者成为一体；(8) Excavate the second trough section, hoist the first continuous wall unit in the trough section, and connect with the first continuous wall unit hoisted in the first trough section through the male and female interfaces on both sides of the continuous wall unit Inlaid in place, the two are integrated by expanding the waterproof strip;
(9)然后吊装后续的预制连续墙单元，重复步骤4～8，完成第二槽段内连续墙单元和预应力钢筋混凝土柱的拼装作业；(9) Then hoist the follow-up prefabricated diaphragm wall unit, repeat steps 4 to 8, and complete the assembling operation of the diaphragm wall unit and the prestressed reinforced concrete column in the second groove section;
(10)通过相同的方式，逐块施工其余墙体单元，直至完成全部拼装工作。(10) In the same way, construct the remaining wall units block by block until all the assembly work is completed.
本发明提供的一种防水型全拼装单箱三室薄壁式地下连续墙结构及施工方法，具有如下有益效果。The invention provides a waterproof fully assembled single-box three-chamber thin-walled underground continuous wall structure and construction method, which has the following beneficial effects.
1.本发明通过工厂化预制连续墙单元，采用先张法制作预应力钢筋混凝土柱，在施工现场实现整个过程的拼装，解决了地下连续墙施工速度慢、接头处质量难以控制的问题。本发明施工可控性强，质量好，施工周期短，效率高，工程实施效果好。1. The present invention prefabricates diaphragm wall units in factory, adopts pretensioning method to make prestressed reinforced concrete columns, and realizes the assembly of the whole process at the construction site, which solves the problems of slow construction speed of underground diaphragm walls and difficulty in controlling the quality of joints. The invention has strong construction controllability, good quality, short construction period, high efficiency and good project implementation effect.
2.本发明在地下连续墙单元拼装完成后，采用全长30米的预应力钢筋混凝土柱贯通整个空腔，进而保证了连续墙墙体的整体一致性，大幅度提升了地下连续墙的整体抗压、抗拉性能，避免了纵向上可能出现的抗剪破坏问题。2. After the assembly of the underground diaphragm wall unit is completed, the present invention uses a prestressed reinforced concrete column with a total length of 30 meters to penetrate the entire cavity, thereby ensuring the overall consistency of the diaphragm wall and greatly improving the overall quality of the underground diaphragm wall. Compressive and tensile properties, avoiding the problem of shear damage that may occur in the longitudinal direction.
3.本发明的连续墙单元之间通过阴阳接口和钢筋连接，并通过膨胀防水条和钢板复合止水条固定，使地下连续墙的整体刚度、抗变形能力和抗渗漏性能得到显著提高，且具有较好的防水性能。3. The diaphragm wall units of the present invention are connected with steel bars through male-female joints, and fixed by expansion waterproof strips and steel plate composite water-stop strips, so that the overall rigidity, deformation resistance and anti-leakage performance of the underground diaphragm wall are significantly improved. And has good waterproof performance.
4.本发明的连续墙单元内部设置有贯通的空腔，不仅节约了材料消耗，降低了工程造价，还大大减少了连续墙单元的重量，便于实现连续墙单元的运输和拼装。4. The continuous cavity is provided inside the continuous wall unit of the present invention, which not only saves material consumption and reduces the construction cost, but also greatly reduces the weight of the continuous wall unit, which facilitates the transportation and assembly of the continuous wall unit.
附图说明Description of drawings
图1为本发明提供的一种防水型全拼装单箱三室薄壁式地下连续墙结构的连续墙单元俯视图。Fig. 1 is a top view of a diaphragm wall unit of a waterproof fully assembled single-box three-chamber thin-wall underground diaphragm wall structure provided by the present invention.
图2为本发明提供的一种防水型全拼装单箱三室薄壁式地下连续墙上段连续墙单元的结构示意图。Fig. 2 is a structural schematic diagram of a waterproof fully assembled single-box three-chamber thin-walled underground diaphragm wall unit provided by the present invention.
图3为本发明提供的一种防水型全拼装单箱三室薄壁式地下连续墙中段连续墙单元的结构示意图。Fig. 3 is a structural schematic diagram of a waterproof fully assembled single-box three-chamber thin-walled diaphragm wall unit in the middle section of the underground diaphragm wall provided by the present invention.
图4为本发明提供的一种防水型全拼装单箱三室薄壁式地下连续墙下段连续墙单元的结构示意图。Fig. 4 is a structural schematic diagram of a waterproof fully assembled single-box three-chamber thin-walled diaphragm wall unit at the lower section of the underground diaphragm wall provided by the present invention.
图5为本发明提供的一种防水型全拼装单箱三室薄壁式地下连续墙单元水平接头处的结构示意图。Fig. 5 is a schematic structural view of the horizontal joint of a waterproof fully assembled single-box three-chamber thin-walled underground diaphragm wall unit provided by the present invention.
图6为本发明提供的一种防水型全拼装单箱三室薄壁式地下连续墙单元竖向接头处的结构示意图。Fig. 6 is a schematic structural view of the vertical joint of a waterproof fully assembled single-box three-chamber thin-walled underground continuous wall unit provided by the present invention.
图7为本发明提供的一种防水型全拼装单箱三室薄壁式地下连续墙结构中预应力钢筋混凝土柱的结构示意图。Fig. 7 is a structural schematic diagram of a prestressed reinforced concrete column in a waterproof fully assembled single-box three-chamber thin-walled underground diaphragm wall structure provided by the present invention.
图中：In the picture:
1.连续墙单元 2.空腔 3.阴接头 4.阳接头 5.防水槽 6.预埋钢筋 7.预留孔洞。1. Diaphragm wall unit 2. Cavity 3. Female joint 4. Male joint 5. Waterproof groove 6. Embedded steel bars 7. Reserved holes.
具体实施方式Detailed ways
下面结合具体实施例和附图对本发明做进一步说明，以助于理解本发明的内容。The present invention will be further described below in conjunction with specific embodiments and accompanying drawings, so as to help understand the content of the present invention.
本发明提供的一种防水型全拼装单箱三室薄壁式地下连续墙结构，由若干连续墙单元1和预应力钢筋混凝土柱沿竖向、水平方向拼装而成，所述预应力钢筋混凝土柱采用先张法制得，尺寸为150cm*50cm*3000cm(如图7所示)。作为优选，预应力钢筋可以选择高强的预应力钢绞线、钢丝作为该预应力钢筋混凝土柱的主力钢筋。作为优选，混凝土采用高强度的混凝土，一般不小于C30。The present invention provides a waterproof fully assembled single-box three-chamber thin-walled underground diaphragm wall structure, which is composed of several diaphragm wall units 1 and prestressed reinforced concrete columns assembled in the vertical and horizontal directions, and the prestressed reinforced concrete columns Adopt pretensioning method to make, size is 150cm*50cm*3000cm (as shown in Figure 7). Preferably, the prestressed steel bars can be selected from high-strength prestressed steel strands and steel wires as the main steel bars of the prestressed reinforced concrete column. Preferably, the concrete is high-strength concrete, generally not less than C30.
如图1所示，为本发明提供的一种防水型全拼装单箱三室薄壁式地下连续墙结构的连续墙单元俯视图。所述连续墙单元1为单箱三室空腔结构，所述连续墙单元1的两端设有用于彼此对接的阴接头3阳接头4，所述连续墙单元1接口处的两侧均设有防水槽5，所述连续墙结构竖向分为上中下三段。As shown in Figure 1, it is a top view of the diaphragm wall unit of a waterproof fully assembled single-box three-chamber thin-wall underground diaphragm wall structure provided by the present invention. The continuous wall unit 1 is a single-box three-chamber cavity structure, and the two ends of the continuous wall unit 1 are provided with female joints 3 and male joints 4 for docking with each other, and both sides of the interface of the continuous wall unit 1 are provided with Waterproof groove 5, the continuous wall structure is vertically divided into upper, middle and lower sections.
如图2-4所示，分别为本发明提供的一种防水型全拼装单箱三室薄壁式地下连续墙上、中、下段连续墙单元的结构示意图。所述上段连续墙单元1上部和下部均设有预埋钢筋6，上部的钢筋埋深50cm，钢筋的一端突出于表面100cm，下部的钢筋埋深50cm，钢筋的一端突出于表面20cm。所述中段连续墙单元1上部设有预留孔洞7，所述预留孔洞7为圆形，直径为4cm、深20cm。下部设有预埋钢筋6，下部的钢筋预埋深50cm，钢筋的一端突出于表面20cm。所述下段连续墙单元1上部设有预留孔洞7。所述预留孔洞7为圆形，直径为4cm、深20cm。所述连续墙单元1长为6m、宽为1m、高为10m。所述连续墙单元1沿长度方向每隔2米设置一个呈上下贯通的空腔，空腔尺寸为150cm*50cm*1000cm，每个连续墙单元1设置3个空腔。所述中段连续墙单元1和下段连续墙单元1的竖向上部，沿长度方向每侧设置6个预留孔洞7，两侧共计设置12个，沿宽度方向在中间每条楞上设置2个预留孔洞7，共计设置4个。所述预留孔洞7的内壁设有套管，以增强接头处预留孔洞7与预埋钢筋6两者的黏结性。优选地，所述套管为PVC套管。所述上段连续墙单元1和中段连续墙单元1的竖向下部，对照预留孔洞7沿长度方向每侧设置6组预埋钢筋6，两侧共计设置12组，对照预留孔洞7沿宽度方向在中间每条楞上设置2组预埋钢筋6，共计设置4组。作为优选，为满足预制墙体拼装后整体的抗剪稳定性，所述预埋钢筋6选用HRB400螺纹钢筋。As shown in Figures 2-4, they are schematic diagrams of the structure of a waterproof fully assembled single-box three-chamber thin-walled underground continuous wall, middle and lower section of the continuous wall unit provided by the present invention. The upper and lower parts of the upper continuous wall unit 1 are equipped with pre-embedded steel bars 6, the top steel bars are buried 50 cm deep, and one end of the steel bars protrudes from the surface by 100 cm, the lower steel bar is buried 50 cm deep, and one end of the steel bars protrudes from the surface by 20 cm. The upper part of the continuous wall unit 1 in the middle section is provided with a reserved hole 7, and the reserved hole 7 is circular with a diameter of 4 cm and a depth of 20 cm. The lower part is provided with a pre-embedded steel bar 6, and the pre-embedded depth of the lower steel bar is 50 cm, and one end of the steel bar protrudes 20 cm from the surface. A reserved hole 7 is provided on the upper part of the lower continuous wall unit 1 . The reserved hole 7 is circular with a diameter of 4 cm and a depth of 20 cm. The continuous wall unit 1 is 6m long, 1m wide and 10m high. The continuous wall unit 1 is provided with a cavity extending up and down every 2 meters along the length direction, the cavity size is 150cm*50cm*1000cm, and each continuous wall unit 1 is provided with 3 cavities. On the vertical upper part of the middle diaphragm wall unit 1 and the lower diaphragm wall unit 1, 6 reserved holes 7 are arranged on each side along the length direction, 12 holes are arranged in total on both sides, and 2 holes are arranged on each flute in the middle along the width direction. 7 holes are reserved, and 4 holes are set in total. The inner wall of the reserved hole 7 is provided with a casing to enhance the cohesion between the reserved hole 7 and the pre-embedded steel bar 6 at the joint. Preferably, the sleeve is a PVC sleeve. On the vertical lower part of the upper section of the diaphragm wall unit 1 and the middle section of the diaphragm wall unit 1, 6 sets of pre-embedded steel bars 6 are arranged on each side along the length direction compared with the reserved holes 7, and 12 groups are arranged on both sides in total, compared with the reserved holes 7 along the width The direction is to set 2 sets of pre-embedded steel bars 6 on each flute in the middle, and set 4 sets in total. Preferably, in order to meet the overall shear stability of the prefabricated wall after assembly, the pre-embedded reinforcement 6 is selected from HRB400 threaded reinforcement.
本发明还提供了一种防水型全拼装单箱三室薄壁式地下连续墙的施工方法，其特征在于，包括以下步骤：The present invention also provides a construction method for a waterproof fully assembled single-box three-chamber thin-walled underground continuous wall, which is characterized in that it includes the following steps:
(1)制备若干连续墙单元1和预应力钢筋混凝土柱；(1) Prepare some diaphragm wall units 1 and prestressed reinforced concrete columns;
(2)开挖沟槽并浇筑地下连续墙导墙；(2) Excavate trenches and pour guide walls for underground diaphragm walls;
(3)对开挖好的沟槽进行成槽施工；(3) Carry out trenching construction to the excavated trench;
(4)完成第一段槽段内的预制连续墙单元1的拼装工作。在槽段内，首先吊入第一块连续墙单元1，然后在竖向方向，吊入第二块连续墙单元1，在水平接触面上，通过预留孔洞7和预埋钢筋6使两段连续墙单元1镶接，并通过套管使两者固定，为了保证接触面的防水性能，进一步增强连接处的黏结性，在接触面处设置钢板复合止水条(如图6所示)；(4) Complete the assembling work of the prefabricated continuous wall unit 1 in the first groove section. In the trough section, the first continuous wall unit 1 is hoisted in first, and then the second continuous wall unit 1 is hoisted in the vertical direction. Sectional continuous wall unit 1 is inlaid, and the two are fixed through the sleeve. In order to ensure the waterproof performance of the contact surface and further enhance the cohesiveness of the connection, a steel plate composite waterstop strip is installed on the contact surface (as shown in Figure 6) ;
(5)在竖向预制地下连续墙整体装配完成后，清洗空腔内部的杂物；(5) After the overall assembly of the vertical prefabricated underground diaphragm wall is completed, clean the sundries inside the cavity;
(6)在空腔内吊装贯穿整个空腔的预应力钢筋混凝土柱，此时完成第一槽段的施工作业；(6) hoist the prestressed reinforced concrete column that runs through the entire cavity in the cavity, and complete the construction work of the first groove section at this time;
(7)完成第一槽段内地下连续墙后，在预留的防水槽5中，安装膨胀防水条；(7) After completing the underground diaphragm wall in the first groove section, install the expansion waterproof strip in the reserved waterproof groove 5;
(8)开挖第二段槽段，吊入该槽段内的第一块连续墙单元1，通过连续墙单元1两侧的阴阳接口，与第一槽段内第一块吊入的连续墙单元1镶接就位，通过膨胀防水条使两者成为一体(如图5所示)；(8) Excavate the second trough section, hoist the first continuous wall unit 1 in the trough section, and connect with the first continuous wall unit 1 hoisted in the first trough section through the male and female interfaces on both sides of the continuous wall unit 1. The wall unit 1 is inlaid in place, and the two are integrated by expanding the waterproof strip (as shown in Figure 5);
(9)然后吊装后续的预制连续墙单元1，重复步骤4～8，完成第二槽段内连续墙单元1和预应力钢筋混凝土柱的拼装作业；(9) Then hoist the follow-up prefabricated diaphragm wall unit 1, repeat steps 4 to 8, and complete the assembling operation of diaphragm wall unit 1 and prestressed reinforced concrete column in the second groove section;
(10)通过相同的方式，逐块施工其余墙体单元，直至完成全部拼装工作。(10) In the same way, construct the remaining wall units block by block until all the assembly work is completed.
本发明通过工厂化预制连续墙单元1，采用先张法制作预应力钢筋混凝土柱，在施工现场实现整个过程的拼装，解决了地下连续墙施工速度慢、接头处质量难以控制的问题。本发明施工可控性强，质量好，施工周期短，效率高，工程实施效果好。本发明在地下连续墙单元1拼装完成后，采用全长30米的预应力钢筋混凝土柱贯通整个空腔，进而保证了连续墙墙体的整体一致性，大幅度提升了地下连续墙的整体抗压、抗拉性能，避免了纵向上可能出现的抗剪破坏问题。本发明的连续墙单元1之间通过阴阳接口和钢筋连接，并通过膨胀防水条和钢板复合止水条固定，使地下连续墙的整体刚度、抗变形能力和抗渗漏性能得到显著提高，且具有较好的防水性能。本发明的连续墙单元1内部设置有贯通的空腔，不仅节约了材料消耗，降低了工程造价，还大大减少了连续墙单元1的重量，便于实现连续墙单元1的运输和拼装。The present invention prefabricates the diaphragm wall unit 1 through industrialization, adopts the pretensioning method to manufacture the prestressed reinforced concrete column, realizes the assembly in the whole process at the construction site, and solves the problems of slow construction speed of the underground diaphragm wall and difficulty in controlling the quality of joints. The invention has strong construction controllability, good quality, short construction period, high efficiency and good project implementation effect. In the present invention, after the assembly of the underground diaphragm wall unit 1 is completed, a prestressed reinforced concrete column with a total length of 30 meters is used to penetrate the entire cavity, thereby ensuring the overall consistency of the diaphragm wall body and greatly improving the overall resistance of the diaphragm wall. Compressive and tensile properties, avoiding possible shear failure problems in the longitudinal direction. Diaphragm wall units 1 of the present invention are connected with steel bars through male-female joints, and fixed by expansion waterproof strips and steel plate composite waterstop strips, so that the overall rigidity, deformation resistance and anti-leakage performance of the underground diaphragm wall are significantly improved, and It has good waterproof performance. The continuous cavity is provided inside the continuous wall unit 1 of the present invention, which not only saves material consumption and reduces the construction cost, but also greatly reduces the weight of the continuous wall unit 1 , which facilitates the transportation and assembly of the continuous wall unit 1 .
本文中应用了具体个例对发明构思进行了详细阐述，以上实施例的说明只是用于帮助理解本发明的核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离该发明构思的前提下，所做的任何显而易见的修改、等同替换或其他改进，均应包含在本发明的保护范围之内。In this paper, specific examples are used to illustrate the inventive concept in detail, and the descriptions of the above embodiments are only used to help understand the core idea of the present invention. It should be pointed out that for those skilled in the art, any obvious modification, equivalent replacement or other improvement should be included in the protection scope of the present invention without departing from the inventive concept.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810017610.0A CN108193667A (en) | 2018-01-09 | 2018-01-09 | A kind of water proof type spelling dress list three Room thin wall-type continuous underground wall structure of case and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810017610.0A CN108193667A (en) | 2018-01-09 | 2018-01-09 | A kind of water proof type spelling dress list three Room thin wall-type continuous underground wall structure of case and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108193667A true CN108193667A (en) | 2018-06-22 |
Family
ID=62588753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810017610.0A Pending CN108193667A (en) | 2018-01-09 | 2018-01-09 | A kind of water proof type spelling dress list three Room thin wall-type continuous underground wall structure of case and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108193667A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281313A (en) * | 2018-09-27 | 2019-01-29 | 广州地铁设计研究院股份有限公司 | A kind of prefabricated composite box-type underground diaphragm wall and its construction method |
| CN110258530A (en) * | 2019-06-04 | 2019-09-20 | 广州穗岩土木科技股份有限公司 | A kind of diaphram wall and its construction method using fore shaft pipe fitting |
| CN110424488A (en) * | 2019-07-12 | 2019-11-08 | 广州穗岩土木科技股份有限公司 | A kind of construction method of diaphram wall |
| CN112030945A (en) * | 2020-08-12 | 2020-12-04 | 中铁四局集团有限公司 | A transverse socket-type joint suitable for prefabricated underground diaphragm walls |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204356780U (en) * | 2014-09-24 | 2015-05-27 | 厦门磐砻地下工程有限公司 | A kind of prefabricated abnormity stake on an empty stomach for deep foundation pit supporting structure |
| CN205224016U (en) * | 2015-11-16 | 2016-05-11 | 上海市政工程设计研究总院（集团）有限公司 | Vertical mosaic structure of precast underground continuous wall |
| CN206128049U (en) * | 2016-10-11 | 2017-04-26 | 上海市政工程设计研究总院（集团）有限公司 | A waterproof construction for vertical mosaic structure of precast underground continuous wall |
| CN206625212U (en) * | 2017-03-07 | 2017-11-10 | 中建地下空间有限公司 | A kind of alignment connection and shear resistance system for full coercion underground continuous wall |
| CN107435334A (en) * | 2017-09-10 | 2017-12-05 | 沈阳建筑大学 | The horizontally-spliced structure of coercion underground continuous wall and its construction method |
-
2018
- 2018-01-09 CN CN201810017610.0A patent/CN108193667A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204356780U (en) * | 2014-09-24 | 2015-05-27 | 厦门磐砻地下工程有限公司 | A kind of prefabricated abnormity stake on an empty stomach for deep foundation pit supporting structure |
| CN205224016U (en) * | 2015-11-16 | 2016-05-11 | 上海市政工程设计研究总院（集团）有限公司 | Vertical mosaic structure of precast underground continuous wall |
| CN206128049U (en) * | 2016-10-11 | 2017-04-26 | 上海市政工程设计研究总院（集团）有限公司 | A waterproof construction for vertical mosaic structure of precast underground continuous wall |
| CN206625212U (en) * | 2017-03-07 | 2017-11-10 | 中建地下空间有限公司 | A kind of alignment connection and shear resistance system for full coercion underground continuous wall |
| CN107435334A (en) * | 2017-09-10 | 2017-12-05 | 沈阳建筑大学 | The horizontally-spliced structure of coercion underground continuous wall and its construction method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281313A (en) * | 2018-09-27 | 2019-01-29 | 广州地铁设计研究院股份有限公司 | A kind of prefabricated composite box-type underground diaphragm wall and its construction method |
| CN110258530A (en) * | 2019-06-04 | 2019-09-20 | 广州穗岩土木科技股份有限公司 | A kind of diaphram wall and its construction method using fore shaft pipe fitting |
| CN110424488A (en) * | 2019-07-12 | 2019-11-08 | 广州穗岩土木科技股份有限公司 | A kind of construction method of diaphram wall |
| CN112030945A (en) * | 2020-08-12 | 2020-12-04 | 中铁四局集团有限公司 | A transverse socket-type joint suitable for prefabricated underground diaphragm walls |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103835283B (en) | Full wet joint prefabricated prestressed underground continuous wall and construction method thereof | |
| CN103806440B (en) | One can be assembled and be inserted self-clamping type precast hollow diaphram wall and construction method thereof | |
| CN103334422B (en) | Assembled embedded type prefabricated hollow underground continuous wall and construction method thereof | |
| CN103898900B (en) | Band pull bar steel tube-concrete composite structure diaphragm wall and construction method thereof | |
| CN107313517B (en) | Connection node between laminated wall and intermediate floor laminated floor | |
| CN101418569B (en) | Optimized composite arch wall with combination of prefabricated arch, support and main structure | |
| CN108677924B (en) | Double-row miniature steel pipe pile grouting wall-forming partition structure and method | |
| CN108221959A (en) | Vertical spliced diaphram wall and its construction method | |
| CN104947709A (en) | Pre-assembled single-compartment municipal tunnel and construction method thereof | |
| CN105951880A (en) | Assembled underground structure of precast concrete planks and construction method thereof | |
| CN105089044A (en) | Horizontal push compaction type prefabricated underground continuous wall system and construction method thereof | |
| CN107905251A (en) | A kind of module prestressing force Retaining Wall and its assembly method | |
| CN205503146U (en) | Novel supporting construction of shallow tunnel suitable for city sensitizing range | |
| CN110258640B (en) | Construction method of superposed wall system for cover-excavation top-down construction | |
| CN108193667A (en) | A kind of water proof type spelling dress list three Room thin wall-type continuous underground wall structure of case and construction method | |
| CN102011410A (en) | Prefabricated prestressed underground continuous wall and construction method thereof | |
| CN108396778A (en) | A kind of construction method in precast assembly tunnel | |
| CN103924581A (en) | Underground continuous wall with prefabricated concrete-filled steel tube composite structure and method for constructing underground continuous wall | |
| CN204825993U (en) | Underground continuous wall stagnant water, lap guard stream joint design | |
| CN111648465B (en) | Combined hollow slab basement exterior wall | |
| CN203334270U (en) | Mountable buried type prefabricated hollow underground diaphragm wall | |
| CN203530958U (en) | Thin-wall prefabricated overlapped concrete underground diaphragm wall | |
| CN102409702A (en) | Waterproof construction method for joint of embedded rubber water stop belt in underground continuous wall | |
| CN205742262U (en) | Concrete prefabricated board pin-connected panel underground structure | |
| CN105625299A (en) | Wallboard type novel underground continuous wall and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180622 |