CN111458086B - Method for rapidly detecting waterproof quality of assembled box culvert seam - Google Patents

Method for rapidly detecting waterproof quality of assembled box culvert seam Download PDF

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CN111458086B
CN111458086B CN202010250375.9A CN202010250375A CN111458086B CN 111458086 B CN111458086 B CN 111458086B CN 202010250375 A CN202010250375 A CN 202010250375A CN 111458086 B CN111458086 B CN 111458086B
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water
box culvert
water inlet
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outlet
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CN111458086A (en
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马晓明
井浩
李捷
王海春
严莉华
尹萍
王占银
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Qinghai Huangyuan Highway Engineering Construction Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/32Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
    • G01M3/3281Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell
    • G01M3/329Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell for verifying the internal pressure of closed containers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point

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Abstract

本发明涉及装配式箱涵工程及装配式地下管廊工程技术领域,具体地说就是一种装配式箱涵接缝防水质量快速检测方法,包括以下步骤:a.预埋管口:在装配式箱涵对接安装前,在装配式箱涵内侧榫头的侧壁预埋一个进水口,在装配式箱涵内侧榫头的顶部预埋一个出水口;b.装配式箱涵安装;c.测试准备阶段:①检查手动加压泵;②检查进水口与出水口是否通畅;d.注水阶段:将手动加压泵上的注水管连接进水口,使用手动加压泵通过进水口向装配式箱涵接缝间隙中不断注水,进行浸泡,浸泡时间不少于24h;e.计算实验压力;f.测试阶段:当实测渗水量小于允许渗水量时试验合格;该技术具有原理简单、成本低廉、高效快捷、准确可靠等优点。

Figure 202010250375

The invention relates to the technical field of prefabricated box culvert engineering and prefabricated underground pipe gallery engineering, in particular to a method for rapid detection of waterproof quality of prefabricated box culvert joints, comprising the following steps: a. Before the installation of the box culvert, a water inlet is pre-buried on the side wall of the tenon inside the prefabricated box culvert, and a water outlet is pre-buried on the top of the tenon inside the prefabricated box culvert; b. Installation of the prefabricated box culvert; c. Test preparation stage : ①Check the manual booster pump; ②Check whether the water inlet and outlet are unobstructed; d. Water injection stage: connect the water injection pipe on the manual booster pump to the water inlet, and use the manual booster pump to connect to the assembled box culvert through the water inlet Water is continuously injected into the gap for soaking, and the soaking time is not less than 24 hours; e. Calculate the experimental pressure; f. Test stage: when the measured water seepage amount is less than the allowable water seepage amount, the test is qualified; this technology has the advantages of simple principle, low cost, high efficiency and fast , accurate and reliable.

Figure 202010250375

Description

Method for rapidly detecting waterproof quality of assembled box culvert seam
Technical Field
The invention relates to the technical field of assembly type box culvert engineering and assembly type underground pipe gallery engineering, in particular to a method for rapidly detecting the waterproof quality of joints of assembly type box culverts.
Background
Brief introduction: the assembly type box culvert, also called a split mounting type box culvert, is a reinforced concrete prefabricated box structure, is a rapid construction process of the box culvert, has the characteristics of factory prefabrication and processing and field assembly, and is mainly used for engineering projects requiring short construction period. The general box culvert construction adopts on-site binding of reinforcing steel bars, formwork support and concrete pouring, has long construction period and short construction period requirement, adopts the assembly type box culvert, can greatly shorten the construction period, is used for the assembly type box culvert for drainage, rubber water stop belts are pre-embedded at two ends of the box culvert, the water stop belts are squeezed after the two sections of box culverts are butted, then the two sections of box culverts are fixed in a certain mode, so that water leakage between sections can be prevented, the quality of the seam of the assembly type box culvert is the key point of construction quality control and is a difficult point, particularly, the waterproof construction of the seam of the assembly type box culvert generates water leakage when the connection is not good, the integral quality of the assembly type box culvert is influenced, the detection of the waterproof quality of the traditional assembly type box culvert seam is usually a closed water test, about 15 directions of water injection are carried out in the whole assembly type box culvert, time and labor are wasted, water resources are very wasted, energy conservation and environmental protection are not beneficial, and the method can hardly be implemented for the assembly type box culvert with large section like highway engineering, even if the method is implemented, the cost is huge, and the detection result has larger error.
Disclosure of Invention
In order to solve the problems, the invention provides a method for rapidly detecting the waterproof quality of a seam of an assembled box culvert.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for rapidly detecting the waterproof quality of a seam of an assembled box culvert comprises the following steps: a. pre-burying a pipe opening: before the assembled box culvert is installed in a butt joint mode, a water inlet is pre-buried in the side wall of the tenon on the inner side of the assembled box culvert, and a water outlet is pre-buried in the top of the tenon on the inner side of the assembled box culvert;
b. and (3) mounting the assembled box culvert: carrying out the butt joint installation work of the conventional assembled box culvert;
c. a test preparation stage: checking a manual pressurizing pump: checking whether a pressure gauge on the manual pressure pump is normal, discharging air in the manual pressure pump and a water injection pipe, sealing the end of the water injection pipe by using a plug, then testing the pressure, stabilizing the pressure for 8-12 minutes when the pressure is increased to 1MPa, and checking whether the sealing condition and the manual pressure pump are damaged when the pressure is reduced on the premise that the pressure is not reduced;
checking whether the water inlet and the water outlet are smooth: if the water inlet or the water outlet is blocked and needs to be cleaned, simultaneously checking whether the end of the water pipe is damaged or not, if the end of the water pipe is damaged, cutting off the damaged part, and keeping enough exposed length to ensure that the water pipe is connected with the water injection pipe;
d. a water injection stage: connecting a water injection pipe on a manual pressure pump with a water inlet, continuously injecting water into the seam gap of the assembled box culvert through the water inlet by using the manual pressure pump, observing a water outlet at the top, indicating that air in the seam gap is completely removed when water flows out linearly from the water outlet, stopping injecting water, sealing the water inlet and the water outlet by using a plug, and soaking for not less than 24 hours;
e. calculating the experimental pressure: calculating test pressure according to the no-pressure condition, taking the net height h1 in the box culvert, calculating a water head h2, wherein h2 is 0.5-1.5 m, h = h1+ h2, and the calculation formula of the test pressure is as follows: p = ρ gh; wherein: p is the pressure; ρ is the liquid density; the density of the water is 1 multiplied by 10^3kg/m ^ 3; g is the gravity acceleration of 9.8N/kg; h = h1+ h 2;
f. and (3) a testing stage: after the seam clearance of the assembled box culvert is filled with water and soaked for 24 hours, keeping the plug on the water outlet sealed, opening the plug of the water inlet, connecting the water inlet with a water filling pipe on a manual pressure pump, checking the sealing condition of pipeline connection, measuring 3-5 liters of water by using a measuring cup, pouring the water into a water tank of the manual pressure pump, supplementing water and pressurizing the seam clearance of the assembled box culvert by using the manual pressure pump, starting timing when the test pressure reaches the specified pressure, observing the water seepage condition of the seam, supplementing water into the seam clearance of the assembled box culvert under the condition of keeping the test pressure p constant, wherein the observation time is more than or equal to 30min, and making data records, including the water supplement amount W, the actually measured water seepage observation time T and the length L of a test culvert section;
g. data processing and result analysis: calculating the actually measured water seepage amount, wherein the actually measured water seepage amount calculation formula is as follows:
q=W/(T×L);
wherein: q is actually measured water seepage amount, L/(min m);
w is water supplement amount, L;
t-actually measured seepage observation time, min;
l is the length of the test culvert section, m;
and when the actually measured water seepage amount is smaller than the allowable water seepage amount, the test is qualified.
As optimization, the water inlet penetrates through the side wall of the tenon, and the water outlet penetrates through the top of the tenon.
As optimization, the water inlet or the water outlet is made of a PPR fiber composite water pipe with the length of 15-25 cm.
Preferably, the water inlet or the water outlet is arranged in the middle of the width direction of the tenon of the box culvert, the water inlet is arranged at the position, 50 cm-60 cm away from the bottom plate, of the side wall of the box culvert, the water outlet is arranged at the middle of the top of the tenon, and the length of the water inlet or the water outlet, which is exposed out of the interior of the assembled box culvert, is 3 cm-5 cm.
The whole beneficial effect of this scheme is: the technology has the advantages of simple principle, low cost, high efficiency, rapidness, accuracy, reliability and the like, does not need to be provided with two-end blocking plates, a high-power water pump, blocking materials and other auxiliary products, and has low cost; the 'inter-seam water pressing test' only injects water at the seam of the assembled box culvert, the water injection amount is only 3-5 liters, compared with the traditional water closing test which injects water at 15 parts in the whole assembled box culvert, the water consumption is only three ten-thousandth of that of the traditional method, the whole cost is only 0.5 percent of that of the traditional method, and the economic benefit is obvious; meanwhile, the technology is fast, simple and convenient to operate and high in efficiency, only one portable manual pressure pump is needed, a large amount of water injection is not needed, and the time can be saved by 8-10 hours; the technology is suitable for highway engineering assembled box culvert engineering, assembled underground conveying and discharging pipelines, assembled underground pipe gallery engineering and the like. The method can be widely applied to construction self-inspection, supervision and sampling inspection and completion inspection of the projects.
Drawings
FIG. 1 is a schematic cross-sectional view of the assembled box culvert of the present invention after butt-joint installation.
FIG. 2 is a schematic diagram of the positions of the water inlet and the water outlet of the assembled box culvert.
Figure 3 is a schematic rear side view of the fabricated box culvert of the present invention.
FIG. 4 is a graph of the allowable water seepage of the pressureless pipe in the water shut-off test according to the present invention.
Wherein 1, water inlet, 2, delivery port, 3, tenon, 4, assembled box culvert seam clearance.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Example 1
A method for rapidly detecting the waterproof quality of a seam of an assembled box culvert comprises the following steps: a. pre-burying a pipe opening: before the assembled box culvert is installed in a butt joint mode, a water inlet is pre-buried in the side wall of the tenon on the inner side of the assembled box culvert, and a water outlet is pre-buried in the top of the tenon on the inner side of the assembled box culvert;
b. and (3) mounting the assembled box culvert: carrying out the butt joint installation work of the conventional assembled box culvert;
c. a test preparation stage: checking a manual pressurizing pump: checking whether a pressure gauge on the manual pressure pump is normal, discharging air in the manual pressure pump and a water injection pipe, sealing the end of the water injection pipe by using a plug, then testing the pressure, stabilizing the pressure for 8-12 minutes when the pressure is increased to 1MPa, and checking whether the sealing condition and the manual pressure pump are damaged when the pressure is reduced on the premise that the pressure is not reduced;
checking whether the water inlet and the water outlet are smooth: if the water inlet or the water outlet is blocked and needs to be cleaned, simultaneously checking whether the end of the water pipe is damaged or not, if the end of the water pipe is damaged, cutting off the damaged part, and keeping enough exposed length to ensure that the water pipe is connected with the water injection pipe;
d. a water injection stage: connecting a water injection pipe on a manual pressure pump with a water inlet, continuously injecting water into the seam gap of the assembled box culvert through the water inlet by using the manual pressure pump, observing a water outlet at the top, indicating that air in the seam gap is completely removed when water flows out linearly from the water outlet, stopping injecting water, sealing the water inlet and the water outlet by using a plug, and soaking for not less than 24 hours;
e. calculating the experimental pressure: calculating test pressure according to the no-pressure condition, taking the net height h1 in the box culvert, calculating a water head h2, wherein h2 is 0.5-1.5 m, h = h1+ h2, and the calculation formula of the test pressure is as follows: p = ρ gh; wherein: p is the pressure; ρ is the liquid density; the density of the water is 1 multiplied by 10^3kg/m ^ 3; g is the gravity acceleration of 9.8N/kg; h = h1+ h 2;
f. and (3) a testing stage: after the seam clearance of the assembled box culvert is filled with water and soaked for 24 hours, keeping the plug on the water outlet sealed, opening the plug of the water inlet, connecting the water inlet with a water filling pipe on a manual pressure pump, checking the sealing condition of pipeline connection, measuring 3-5 liters of water by using a measuring cup, pouring the water into a water tank of the manual pressure pump, supplementing water and pressurizing the seam clearance of the assembled box culvert by using the manual pressure pump, starting timing when the test pressure reaches the specified pressure, observing the water seepage condition of the seam, supplementing water into the seam clearance of the assembled box culvert under the condition of keeping the test pressure p constant, wherein the observation time is more than or equal to 30min, and making data records, including the water supplement amount W, the actually measured water seepage observation time T and the length L of a test culvert section;
g. data processing and result analysis: calculating the actually measured water seepage amount, wherein the actually measured water seepage amount calculation formula is as follows:
q=W/(T×L);
wherein: q is actually measured water seepage amount, L/(min m);
w is water supplement amount, L;
t-actually measured seepage observation time, min;
l is the length of the test culvert section, m;
when the measured water seepage amount is smaller than the allowable water seepage amount, the test is qualified, and the allowable water seepage amount is shown in figure 4.
The water inlet penetrates through the side wall of the tenon, and the water outlet penetrates through the top of the tenon.
The water inlet or the water outlet are both made of a PPR fiber composite water pipe with the length of 15-25 cm.
The water inlet or the water outlet is arranged in the middle of the width direction of the tenon of the box culvert, the water inlet is arranged at the position, 50-60 cm away from the bottom plate, of the side wall of the box culvert, the water outlet is arranged at the middle position of the top of the tenon, and the length of the water inlet or the water outlet, which is exposed out of the interior of the assembled box culvert, is 3-5 cm.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the product form and style of the above embodiments, and any method for rapidly detecting the waterproof quality of assembled box culvert joints according to the claims of the present invention and any suitable changes or modifications thereof by those skilled in the art shall fall within the protection scope of the present invention.

Claims (4)

1.一种装配式箱涵接缝防水质量快速检测方法,其特征在于:包括以下步骤:a.预埋管口:在装配式箱涵对接安装前,在装配式箱涵内侧榫头的侧壁预埋一个进水口,在装配式箱涵内侧榫头的顶部预埋一个出水口;1. A method for quick detection of waterproof quality of prefabricated box culvert joints, it is characterized in that: comprising the following steps: a. Pre-embedded nozzle: before prefabricated box culvert butt installation, on the side wall of the inner tenon of prefabricated box culvert A water inlet is pre-buried, and a water outlet is pre-buried on the top of the tenon inside the assembled box culvert; b.装配式箱涵安装:进行常规的装配式箱涵的对接安装工作;b. Installation of prefabricated box culverts: carry out the docking and installation work of conventional prefabricated box culverts; c.测试准备阶段:①检查手动加压泵:检查手动加压泵上的压力表是否正常,将手动加压泵及注水管中的空气排出,用堵头封住注水管端头,然后试压,压力加至1MPa时,稳压8~12分钟,以压力不下降为准,当压力下降时,检查密封情况及手动加压泵是否受到损坏;c. Test preparation stage: ① Check the manual pressure pump: Check whether the pressure gauge on the manual pressure pump is normal, discharge the air in the manual pressure pump and the water injection pipe, seal the end of the water injection pipe with a plug, and then test When the pressure is increased to 1MPa, the pressure is stabilized for 8 to 12 minutes, subject to the pressure does not drop. When the pressure drops, check the sealing condition and whether the manual pressure pump is damaged; ②检查进水口与出水口是否通畅:如果进水口或出水口有堵塞需清理干净,同时检查水管端头是否有破损,如果有破损,可将破损部分截掉,但应留够出露长度以保证与注水管进行连接;②Check whether the water inlet and outlet are unobstructed: if the water inlet or outlet is blocked, it needs to be cleaned up, and at the same time, check whether the end of the water pipe is damaged. Ensure the connection with the water injection pipe; d.注水阶段:将手动加压泵上的注水管连接进水口,使用手动加压泵通过进水口向装配式箱涵接缝间隙中不断注水,并观察顶部的出水口,当出水口有水成线状流出时,说明接缝间隙内的空气已经被完全排除,此时停止注水,用堵头封住进水口与出水口,进行浸泡,浸泡时间不少于24h;d. Water injection stage: connect the water injection pipe on the manual pressure pump to the water inlet, use the manual pressure pump to continuously inject water into the joint gap of the assembled box culvert through the water inlet, and observe the water outlet on the top, when there is water in the water outlet When it flows out in a line, it means that the air in the joint gap has been completely removed. At this time, stop water injection, seal the water inlet and outlet with a plug, and soak for no less than 24 hours; e.计算实验压力:按无压力情况计算试验压力,取箱涵内净高度h1,计算水头h2,h2为0.5~1.5m,h=h1+h2,试验压力的计算公式为:p=ρgh;其中:p是压强;ρ是液体密度;水的密度为1×10^3kg/m^3;g是重力加速度取9.8N/kg;h=h1+h2;e. Calculate the test pressure: calculate the test pressure according to the no-pressure condition, take the net height h1 of the box culvert, calculate the water head h2, h2 is 0.5~1.5m, h=h1+h2, the calculation formula of the test pressure is: p=ρgh; Where: p is the pressure; ρ is the density of the liquid; the density of water is 1×10^3kg/m^3; g is the acceleration of gravity, which is 9.8N/kg; h=h1+h2; f.测试阶段:装配式箱涵接缝间隙内注水浸泡24h后,保持出水口上的堵头密封,打开进水口的堵头,将进水口与手动加压泵上的注水管连接,并检查管道连接的密封情况,用量杯量取3~5升水,倒入手动加压泵的水槽中,手动加压泵对装配式箱涵接缝间隙进行补水加压,试验压力达规定压力时开始计时,观测接缝渗水情况,在保持试验压力p恒定的情况下,向装配式箱涵接缝间隙内补水,观测时间大于等于30min,并做好数据记录,包括补水量W、实测渗水量观测时间T和试验涵段的长度L;f. Test stage: After 24 hours of water injection in the joint gap of the assembled box culvert, keep the plug on the water outlet sealed, open the plug of the water inlet, connect the water inlet to the water injection pipe on the manual pressure pump, and check For the sealing condition of the pipeline connection, measure 3-5 liters of water with a measuring cup and pour it into the water tank of the manual pressure pump. The manual pressure pump will replenish and pressurize the joint gap of the assembled box culvert, and start timing when the test pressure reaches the specified pressure. , observe the water seepage of the joints, and under the condition of keeping the test pressure p constant, add water to the joint gap of the assembled box culvert. T and the length L of the test culvert; g.数据处理及结果分析:计算实测渗水量,实测渗水量计算公式为:g. Data processing and result analysis: Calculate the measured seepage amount. The calculation formula of the measured seepage amount is: q=W/(T×L);q=W/(T×L); 其中:q——实测渗水量,L/(min*m);Among them: q——measured seepage amount, L/(min*m); W——补水量,L;W——the amount of water replenishment, L; T——实测渗水量观测时间,min;T——the observation time of the measured seepage amount, min; L——试验涵段的长度,m;L——the length of the test culvert, m; 当实测渗水量小于允许渗水量时试验合格。When the measured seepage amount is less than the allowable seepage amount, the test is qualified. 2.根据权利要求1所述的一种装配式箱涵接缝防水质量快速检测方法,其特征在于:所述的进水口贯穿榫头侧壁,所述的出水口贯穿榫头顶部。2 . The method for rapidly testing the waterproof quality of a joint of an assembled box culvert according to claim 1 , wherein the water inlet penetrates the side wall of the tenon, and the water outlet penetrates the top of the tenon. 3 . 3.根据权利要求1所述的一种装配式箱涵接缝防水质量快速检测方法,其特征在于:所述的进水口或出水口均为15mm的PPR纤维复合水管制成,长度为15~25cm。3. A kind of quick detection method of waterproof quality of assembled box culvert joint according to claim 1, it is characterized in that: described water inlet or water outlet are made of PPR fiber composite water pipe of 15mm, and the length is 15~ 25cm. 4.根据权利要求1所述的一种装配式箱涵接缝防水质量快速检测方法,其特征在于:所述的进水口或出水口设在箱涵榫头宽度方向的中间部位,所述的进水口设置在箱涵侧壁距离底板50cm~60cm的高度处,出水口出水口设置在榫头顶部中间位置处,所述的进水口或出水口露出装配式箱涵内部的长度为3cm~5cm。4. A method for rapid detection of waterproof quality of an assembled box culvert joint according to claim 1, characterized in that: the water inlet or water outlet is located in the middle part of the box culvert tenon width direction, and the water inlet or outlet The water outlet is arranged at a height of 50cm-60cm from the side wall of the box culvert and the bottom plate, and the water outlet of the water outlet is arranged at the middle position of the top of the tenon.
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